> ## Content Index > Fetch the complete content index at: https://die-less.com/llms.txt > Use this file to discover other available public pages before exploring further. # Best Fire Extinguisher When Storage Space Is Tight - URL: https://die-less.com/best-budget-fire-extinguisher-homeowners/ - Published: 2026-09-07T07:41:28.000Z - Updated: 2026-09-07T09:49:17.000Z - Description: Six home fire extinguishers compared on UL rating, canister weight, mounting hardware and warranty length. The Kidde FA110G two-pack wins because coverage in two rooms beats one heavier unit in the hallway. - Author: Taylor Davidson - Tags: Fire Safety, Home Safety, #Tools And Home Improvement The best budget fire extinguisher for homeowners is the Kidde Basic 110 two-pack, because two 7.5 lb canisters rated 1-A:10-B:C put protection in two rooms instead of one hallway. If your garage holds gasoline, a mower and paint thinner, the First Alert HOME2PRO at 9.6 lb and UL 2-A:10-B:C is the better single buy. Entry, middle and premium here buy very different things. The cheapest pick is a 4.5 lb single canister. The middle buys either two units or a heavier one. The most expensive buys a 5 lb canister with a mounting bracket and thinner published specifications. In this guide 1. [Best budget fire extinguisher for homeowners at a glance](#best-budget-fire-extinguisher-for-homeowners-at-a-glance) 2. [How I cut the field down to six](#how-i-cut-the-field-down-to-six) 3. [What do the UL ratings on the label actually mean?](#what-do-the-ul-ratings-on-the-label-actually-mean) 4. [1\. Kidde Basic 110 Fire Extinguisher for Home — Best overall](#1-kidde-basic-110-fire-extinguisher-for-home-%E2%80%94-best-overall) 5. [2\. First Alert Fire Extinguisher, Heavy Duty — Runner-up](#2-first-alert-fire-extinguisher-heavy-duty-%E2%80%94-runner-up) 6. [3\. First Alert Fire Extinguisher, Standard Home Use — Best budget pick](#3-first-alert-fire-extinguisher-standard-home-use-%E2%80%94-best-budget-pick) 7. [4\. Jasvelly ABC Dry Chemical Fire Extinguishers — Best premium](#4-jasvelly-abc-dry-chemical-fire-extinguishers-%E2%80%94-best-premium) 8. [5\. Joyfast 5 lb ABC Dry Chemical Fire Extinguisher — Best for beginners](#5-joyfast-5-lb-abc-dry-chemical-fire-extinguisher-%E2%80%94-best-for-beginners) 9. [6\. Ougist Fire Extinguisher Spray, 620ml 2 Count — Best for heavy use](#6-ougist-fire-extinguisher-spray-620ml-2-count-%E2%80%94-best-for-heavy-use) 10. [What does more money buy in a home fire extinguisher?](#what-does-more-money-buy-in-a-home-fire-extinguisher) 11. [Where should you mount each one?](#where-should-you-mount-each-one) 12. [What the listings do not tell you](#what-the-listings-do-not-tell-you) 13. [When a different pick wins](#when-a-different-pick-wins) 14. [The verdict](#the-verdict) 15. [FAQ](#faq) ## Best budget fire extinguisher for homeowners at a glance | Pick | UL rating | Canister weight | Price | | ---------------------------------------------------------------------------------------------------------------------------- | ---------------- | ---------------- | ------------------------------------------------------------------ | | **Best overall**[Kidde Basic 110 Fire Extinguisher for Home](https://www.amazon.com/dp/B07D6QGQYB?tag=dieless-20) | 1-A:10-B:C | 7.5 lb (2 units) | [Check Price](https://www.amazon.com/dp/B07D6QGQYB?tag=dieless-20) | | **Runner-up**[First Alert Fire Extinguisher, Heavy Duty](https://www.amazon.com/dp/B07B9BNN24?tag=dieless-20) | 2-A:10-B:C claim | 9.6 lb | [Check Price](https://www.amazon.com/dp/B07B9BNN24?tag=dieless-20) | | **Best budget pick**[First Alert Fire Extinguisher, Standard Home Use](https://www.amazon.com/dp/B01LTICQYE?tag=dieless-20) | 1-A:10-B:C claim | 4.5 lb | [Check Price](https://www.amazon.com/dp/B01LTICQYE?tag=dieless-20) | | **Best premium**[Jasvelly ABC Dry Chemical Fire Extinguishers](https://www.amazon.com/dp/B0G6KV2XCZ?tag=dieless-20) | 2-A:10-B:C claim | 5 lb agent claim | [Check Price](https://www.amazon.com/dp/B0G6KV2XCZ?tag=dieless-20) | | **Best for beginners**[Joyfast 5 lb ABC Dry Chemical Fire Extinguisher](https://www.amazon.com/dp/B0GWHXQKBX?tag=dieless-20) | 2-A:10-B:C claim | 9 lb | [Check Price](https://www.amazon.com/dp/B0GWHXQKBX?tag=dieless-20) | | **Best for heavy use**[Ougist Fire Extinguisher Spray, 620ml 2 Count](https://www.amazon.com/dp/B0BF4KF5KY?tag=dieless-20) | Not stated | 4 lb (2 cans) | [Check Price](https://www.amazon.com/dp/B0BF4KF5KY?tag=dieless-20) | ## How I cut the field down to six Three things got listings cut before I compared anything else. The first was a missing UL rating. Four of the six picks state a 1-A:10-B:C or 2-A:10-B:C rating in their own listing copy. That code is the only comparable number in this category, and a listing that skips it is asking you to trust a photo of a red cylinder. The second was a missing canister weight or dimension. A homeowner shopping for the best budget fire extinguisher for homeowners is usually fitting one somewhere specific: under a sink, inside a pantry door, beside a garage bench. Without a length figure you cannot know if it clears the shelf. The third was a single-purpose canister sold as whole-house protection. Aerosol sprays and kitchen-only cans have a place, but they are not a substitute for a rated ABC extinguisher, and I have not ranked them as one. What survived is six listings that publish enough to compare: 1. Four with a stated UL rating. 2. Five with a published canister weight. 3. Five with a stated warranty term. 4. Two sold as multi-packs rather than single units. ## What do the UL ratings on the label actually mean? Most guides to the best budget fire extinguisher for homeowners compare canister size in pounds. That is the wrong number to lead with. The UL rating is what fire codes reference, and it maps directly to how much fire the unit can actually put out. Read it left to right: - **The number before the A** is Class A capacity: wood, paper, cloth, trash. A 2-A unit handles roughly twice the ordinary combustible fire a 1-A unit does. - **The number before the B** is Class B capacity in square feet of flammable liquid fire. All four rated picks here claim 10-B. - **The C** is not a number. It means the agent is safe to use on energised electrical equipment. So 1-A:10-B:C and 2-A:10-B:C differ only on the first figure. The Kidde FA110G and the First Alert HOME1 state 1-A:10-B:C. The First Alert HOME2PRO, Joyfast and Jasvelly listings all claim 2-A:10-B:C. Here's the trick with that difference. Many local codes call for a minimum 2-A:10-B:C in a garage or workshop, and the HOME2PRO listing says outright that it meets that minimum. In a kitchen, where the fire you are realistically fighting is a pan or a small trash can, 1-A:10-B:C is the standard residential answer. Buying a 2-A canister for the kitchen and leaving the garage empty is worse than buying two 1-A units. ## 1\. Kidde Basic 110 Fire Extinguisher for Home — Best overall **Two 7.5 lb canisters rated 1-A:10-B:C cover more of your house than any single unit in this group.** [![Kidde FA110G two-pack of red aluminium home fire extinguishers with pressure gauges — two canisters cover two rooms instead of one](https://m.media-amazon.com/images/I/41moSSeDtPL._SL500_.jpg)](https://www.amazon.com/dp/B07D6QGQYB?tag=dieless-20) **Best for:** covering a kitchen and a garage at once **Skip it if:** you need a 2-A rated canister The count spec is what makes this the winner. You get 2 units, and the 7.5 lb combined shipping weight tells you these are compact aluminium canisters rather than commercial steel. Each measures within a 15 x 7.63 x 5.5 in package footprint, so one fits inside a standard base cabinet. This is also the one buyers choose most often here by a wide margin, and it sells faster than every other pick in this set. Kidde states 1-A:10-B:C on the FA110G, which is the common residential rating, and lists all-metal construction with an easy-pull safety pin and a pressure gauge that reads charged when the arrow sits in the green. The warranty is 6 years, the shortest term among the three First Alert and Kidde picks. The model dates from 2020, so this is a mature listing rather than a new one, and only one seller stocks it. The trade-off against the runner-up is straightforward: 1-A instead of 2-A. If a single canister has to satisfy a garage code minimum, this is not that canister. It wins because coverage in two rooms beats capacity in one. **Pros:** - Two canisters, the highest unit count in this set - 1-A:10-B:C rating stated by Kidde - Compact aluminium body at 7.5 lb for the pair - The fastest-selling pick of the six - Pressure gauge with a simple green-arrow check **Cons:** - 1-A rating, below the 2-A some garage codes require - 6-year warranty, the shortest of the named-brand picks - Only one seller lists it - No wall bracket mentioned in the listing [Check Price on Amazon](https://www.amazon.com/dp/B07D6QGQYB?tag=dieless-20) ## 2\. First Alert Fire Extinguisher, Heavy Duty — Runner-up **The heaviest canister here at 9.6 lb, with a 12-year limited warranty no other pick matches.** [![First Alert HOME2PRO heavy duty extinguisher with metal valve and colour-coded gauge — a 12-year warranty is the longest in this set](https://m.media-amazon.com/images/I/41SbuH+cdQL._SL500_.jpg)](https://www.amazon.com/dp/B07B9BNN24?tag=dieless-20) **Best for:** a garage or workshop with a real fuel load **Skip it if:** you want two units for two floors First Alert lists the HOME2PRO as UL rated 2-A:10-B:C and says it meets minimum 2-A:10-B:C code requirements. That sentence is the reason this pick exists in the guide. If a permit, an inspection or an insurance form specifies that rating, this is the one listing here that addresses it directly. At 9.6 lb it is the heaviest single canister of the six, and at 17 x 5.75 x 6 in it is also the longest. That is a real consideration in a tight utility closet. The listing states mono ammonium phosphate as the agent, rechargeable by certified professionals after use, plus a wall hook and a colour-coded corrosion-resistant gauge. The 12-year limited warranty is the standout number. Nothing else in this set publishes more than 10 years. Sits roughly mid-range for this set on price, and it moves far slower than the Kidde. The trade-off against the winner is coverage: one canister, one room. For a two-storey house you would need two of these, which pushes you past the middle of this price field. **Pros:** - 2-A:10-B:C rating stated, meeting a common code minimum - 12-year limited warranty, longest here - Wall hook included per the listing - Mono ammonium phosphate agent, rechargeable by a professional **Cons:** - Heaviest single canister at 9.6 lb - Longest body at 17 in, awkward in shallow cabinets - One unit only, so a second floor needs a second buy - Only one seller lists it [Check Price on Amazon](https://www.amazon.com/dp/B07B9BNN24?tag=dieless-20) ## 3\. First Alert Fire Extinguisher, Standard Home Use — Best budget pick **The lightest and slimmest rated canister here at 4.5 lb and 4 in deep, and the cheapest of the six.** [![First Alert HOME1 compact red extinguisher with metal pull pin and waterproof label — 4.25 in wide fits inside a cabinet door](https://m.media-amazon.com/images/I/314FRdSInlL._SL500_.jpg)](https://www.amazon.com/dp/B01LTICQYE?tag=dieless-20) **Best for:** a small apartment kitchen or a boat **Skip it if:** you're covering a garage Dimensions decide this one. At 15 x 4.25 x 4 in and 4.5 lb, the HOME1 is the only pick in this set slim enough to hang inside a cabinet door or sit in a galley locker without eating shelf depth. It is also the cheapest of the six. First Alert states UL 1-A:10-B:C, all-metal construction with a commercial-grade metal valve and trigger, and a metal pull pin with a safety seal against tampering. The gauge is colour-coded and corrosion-resistant, and the label is waterproof, which pairs with the listing's claim of U.S. Coast Guard approval for marine use. That marine note is the one genuinely distinguishing feature claim in the set. Warranty is 10-year limited, second only to the HOME2PRO. The honest limitation is capacity. This is the smallest rated canister here, and 4.5 lb of extinguisher does not fight a garage fire for long. Against the Kidde two-pack you also get one unit rather than two, so the per-room cost is higher than the sticker suggests. **Pros:** - Cheapest of the six - Slimmest profile at 4 in deep - 10-year limited warranty - Coast Guard approval for marine use claimed - Metal pull pin with anti-tamper safety seal **Cons:** - Smallest capacity at 4.5 lb - 1-A rating, not the 2-A some garages require - Single unit, so whole-house coverage costs more - No wall bracket mentioned [Check Price on Amazon](https://www.amazon.com/dp/B01LTICQYE?tag=dieless-20) ## 4\. Jasvelly ABC Dry Chemical Fire Extinguishers — Best premium **A claimed 5 lb 2A:10B:C canister with a quick-release handle, and the thinnest specification sheet in this guide.** [![Jasvelly 5 lb ABC dry chemical extinguisher with quick-release handle — the 2A:10B:C claim comes with no published weight or dimensions](https://m.media-amazon.com/images/I/41ZFPESjNIL._SL500_.jpg)](https://www.amazon.com/dp/B0G6KV2XCZ?tag=dieless-20) **Best for:** buyers who want a 5 lb canister and a quick-release handle **Skip it if:** you compare published specifications before buying This is the most expensive pick here, and it publishes the least. The specifications amount to a 5 lb size, a red colour, a count of 1 and model DCEKG. No weight, no dimensions, no warranty term. What Jasvelly claims in its feature copy is a 5 lb ABC dry chemical charge covering Class A wood and paper, Class B grease and gasoline, and Class C electrical fires, at 2a10bc. The listing also claims all-weather reliability, a quick-release handle for fast activation, and a compact body that fits under a kitchen sink, in a car trunk or in an RV storage nook. Those are the manufacturer's words, not measured figures, and there is no published dimension to check the under-sink claim against. Set against the First Alert HOME2PRO, which claims the same rating class and publishes a weight, a length and a 12-year warranty, this pick asks more money for less information. That is the trade-off. Buy it if the quick-release handle and the 5 lb agent charge are what you care about most. **Pros:** - 2a10bc rating claimed, matching the higher class here - 5 lb dry chemical charge claimed - Quick-release handle claimed for fast activation - Marketed for home, boat and truck use **Cons:** - The most expensive pick here with the fewest published specifications - No published weight, dimensions or warranty term - No dimension to verify the under-sink fit claim - Only one seller lists it [Check Price on Amazon](https://www.amazon.com/dp/B0G6KV2XCZ?tag=dieless-20) ## 5\. Joyfast 5 lb ABC Dry Chemical Fire Extinguisher — Best for beginners **The only pick that publishes a temperature range and ships a quick-release wall bracket.** [![Joyfast 5 lb ABC extinguisher with heavy-duty wall mounting bracket — the bracket and a -22°F rating suit an unheated garage](https://m.media-amazon.com/images/I/41utaoxovrL._SL500_.jpg)](https://www.amazon.com/dp/B0GWHXQKBX?tag=dieless-20) **Best for:** a cold garage or an RV, with the bracket included **Skip it if:** you dislike the low-turnover listing If you have never mounted an extinguisher before, the included hardware matters more than you'd think. Joyfast states a heavy-duty quick-release mounting bracket in the box, and it is the only pick here that leads with mounting as a feature rather than a footnote. The other number worth having is the operating range: Joyfast claims reliable performance from -22°F to 140°F. Nobody else in this set publishes a temperature window at all. For an unheated garage in a northern winter, that is the specification you actually want. The listing also claims a discharge range up to 15 feet, one-handed operation, and a 5 lb ABC dry chemical charge rated 2A:10B:C. Published figures are 9 lb, 16.5 x 3.94 x 3.94 in, and a 6-year warranty. That 3.94 in width is the slimmest body of the three 5 lb picks. It is priced in the premium band and it is the slowest seller of the six by a large margin. There is no track record here of the kind the Kidde and First Alert listings have. **Pros:** - \-22°F to 140°F range, the only published temperature spec here - Quick-release wall bracket included - Slim 3.94 in body for a 5 lb canister - 15-foot discharge range claimed **Cons:** - The slowest-selling pick of the six - Premium price for a 6-year warranty, matching the cheaper Kidde - 9 lb, heavier than every pick except the HOME2PRO - Only one seller lists it [Check Price on Amazon](https://www.amazon.com/dp/B0GWHXQKBX?tag=dieless-20) ## 6\. Ougist Fire Extinguisher Spray, 620ml 2 Count — Best for heavy use **Two 620ml water-based aerosol cans for the places a 9 lb canister will never live, with no UL rating published.** [![Ougist water-based aerosol fire extinguisher spray cans — 620ml each, sized for a car door pocket rather than a wall bracket](https://m.media-amazon.com/images/I/41sI9-wWKhL._SL500_.jpg)](https://www.amazon.com/dp/B0BF4KF5KY?tag=dieless-20) **Best for:** a car, a boat, or a second line of defence in the kitchen **Skip it if:** you need one code-compliant extinguisher for the house Different product, different job. These are 620ml water-based aerosol cans, 2 to a pack, at 4 lb for the set. Ougist gives a height of 11.7 in and a width of 3.3 in, which is a door-pocket size rather than a wall-bracket size. The claims are a non-toxic biodegradable formula, a maximum spray distance of 13 feet, and no residue or mess after use. Ougist also claims the formula prevents re-ignition. Water-based agents leave far less to clean up than dry chemical powder, which is a genuine argument for keeping one in a car. Here is the hard limit, and it is why this sits last. The listing publishes no UL rating, so there is no A, B or C class figure to compare against the other five. Water-based agent on a grease pan or live wiring is not the same proposition as ABC dry chemical, and the warranty is described only as a manufacturer and seller combination rather than a term in years. It is the second-cheapest here and two sellers stock it, the only pick in the set with more than one. Treat it as a supplement, never a replacement. **Pros:** - Second-cheapest pick, and two cans in the pack - Slim 3.3 in width fits a car door pocket - Water-based formula claimed to leave no residue - 13-foot spray distance claimed - The only pick with more than one seller **Cons:** - No UL rating published, so capacity is uncomparable - No warranty term stated, only a combination policy - Not a substitute for a rated ABC extinguisher - Water-based agent, unlike every other pick here [Check Price on Amazon](https://www.amazon.com/dp/B0BF4KF5KY?tag=dieless-20) ## What does more money buy in a home fire extinguisher? Across this set, more money buys agent weight and mounting hardware. It does not reliably buy a longer warranty or better documentation. **Entry tier.** The First Alert HOME1 at 4.5 lb and the Ougist aerosol two-pack sit here. You get one rated 1-A:10-B:C canister, or two unrated aerosol cans. Both are slim. Both are single-room answers. **Middle tier.** The Kidde two-pack and the First Alert HOME2PRO. This is where the useful choice lives: two 1-A canisters, or one 2-A canister with a 12-year warranty and a wall hook. Coverage versus capacity, and nothing else really separates them. **Premium tier.** Joyfast and Jasvelly, both 5 lb ABC claims. Joyfast adds the bracket and the -22°F to 140°F range. Jasvelly adds the quick-release handle. Both carry 6 years of warranty or none stated, which is less than the 10 and 12 years the mid-tier First Alerts publish. So the money curve here is not a straight line. Spending up buys you a bigger charge and a bracket. It does not buy you a better-documented product. ## Where should you mount each one? Placement decides whether an extinguisher gets used. A canister behind a stack of paint cans is decoration. - **Kitchen:** near the exit, not beside the stove. You want to be reaching away from the fire, not over it. The slim First Alert HOME1 at 4 in deep fits inside a cabinet door here. - **Garage or workshop:** by the door you walk in through, at chest height. This is the 2-A:10-B:C spot, so the HOME2PRO or one of the 5 lb picks. - **Upstairs hallway:** near the top of the stairs. The second Kidde canister from the two-pack goes here. - **Car or boat:** the Ougist aerosol at 3.3 in wide, or the Coast Guard-approved HOME1. Two habits go with placement. Check the gauge arrow sits in the green every month, which takes four seconds on any of the gauged picks. And tell everyone in the house where each unit is, because the person who finds the fire is rarely the person who bought the extinguisher. ## What the listings do not tell you The keyword here says budget, and Amazon's own results only partly honour that. Two of these six sit in the premium band, and one of them publishes fewer specifications than anything else in the guide. Judge cost for yourself at the link; my job is the comparison. Three gaps worth knowing about: **Service life is not the warranty.** A 12-year limited warranty is a manufacturer promise, not a statement of how long the charge holds. Disposable extinguishers are generally replaced rather than serviced, and the gauge is your only in-home indicator. **Recharging depends on your area.** First Alert says both its picks are rechargeable by a certified professional. Whether a shop near you will service a residential canister is a separate question, and the listing cannot answer it. **Bracket availability is inconsistent.** Only Joyfast states a bracket in the box, and the HOME2PRO states a wall hook. The Kidde and HOME1 listings mention neither, so budget for a mount. ## When a different pick wins Three conditions flip the recommendation away from the Kidde two-pack. 1. **Your garage needs 2-A:10-B:C.** The Kidde is 1-A. Go to the First Alert HOME2PRO, which states it meets that minimum, or to one of the 5 lb picks claiming 2A:10B:C. 2. **Your only space is under 4.5 in deep.** The HOME1 at 4 in and the Joyfast at 3.94 in are the two that fit. The HOME2PRO at 6 in does not. 3. **The unit lives in an unheated space below freezing.** Only Joyfast publishes a low-temperature figure, at -22°F. One more threshold. If you have exactly one room to protect and no second floor, buying a two-pack wastes half of it. A single 4.5 lb HOME1 in a studio kitchen is the right call, and it is the cheapest option here. ## The verdict Sort this by budget tier and the answer is clean. At the entry tier, the First Alert HOME1 wins. It is the cheapest of the six, the slimmest rated canister at 4 in deep, it states 1-A:10-B:C, and it carries a 10-year limited warranty. For one kitchen or one boat, nothing here beats it. In the middle tier, the Kidde Basic 110 two-pack is the overall winner and the default recommendation. Two 1-A:10-B:C canisters at 7.5 lb for the pair put a unit in the kitchen and a unit in the garage, and it is the fastest-selling pick in this set by a distance. The runner-up's exact advantage is the rating: the First Alert HOME2PRO states UL 2-A:10-B:C and says it meets that code minimum, with a 12-year limited warranty and a wall hook, at 9.6 lb. If a code, a permit or an insurer names 2-A, that is your buy. At the premium tier, take the Joyfast over the Jasvelly. Both claim 5 lb and 2A:10B:C, but Joyfast publishes 9 lb, 16.5 x 3.94 x 3.94 in, a 6-year warranty and a -22°F to 140°F range, and ships the bracket. Jasvelly publishes a size and a model number. ## FAQ ### Is a budget fire extinguisher actually worth buying? A budget fire extinguisher is worth buying when it carries a UL rating, and four of these six state one. The cheapest pick here, the First Alert HOME1, publishes 1-A:10-B:C, all-metal construction, a 10-year limited warranty and a 4.5 lb weight. Spending more in this set mostly adds agent weight and a mounting bracket, not documentation. ### What size fire extinguisher do I need for a house? The size fire extinguisher you need depends on the room. For a kitchen, a 1-A:10-B:C unit like the 4.5 lb First Alert HOME1 or the 7.5 lb Kidde two-pack is the standard residential answer. For a garage holding fuel and solvents, step up to a 2-A:10-B:C canister such as the 9.6 lb First Alert HOME2PRO. ### Which is the best budget fire extinguisher for homeowners on two floors? The best budget fire extinguisher for homeowners on two floors is the Kidde Basic 110 two-pack, because you get 2 canisters in one purchase. One goes in the kitchen, one at the top of the stairs. Buying two single units instead, like the HOME2PRO, pushes past the middle of this price field for the same coverage. ### Kidde Basic 110 or First Alert HOME2PRO? Kidde Basic 110 or First Alert HOME2PRO comes down to coverage against rating. The Kidde gives you two 1-A:10-B:C canisters at 7.5 lb combined. The HOME2PRO gives one 9.6 lb canister stated at 2-A:10-B:C, meeting that code minimum, with a 12-year limited warranty. Garage with a fuel load, take the HOME2PRO. Whole house, take the Kidde. ### Can aerosol extinguisher spray replace a regular extinguisher? Aerosol extinguisher spray cannot replace a rated ABC canister. The Ougist 620ml two-pack publishes no UL rating, so there is no A, B or C class figure to compare, and its water-based formula differs from the dry chemical agent in every other pick here. Keep it in a car or as a kitchen backup, alongside a rated unit. Walk your house before you buy. Measure the depth of the cabinet or the wall space where each unit will actually live, then check that number against the dimensions in the table above. Two of these picks are under 4.5 in deep and two are not. Then buy for rooms, not for units. The Kidde Basic 110 two-pack is the default because a fire does not wait for you to run to the hallway, and 2 canisters rated 1-A:10-B:C in the two rooms where kitchen and garage fires start beats one heavier canister you have to fetch. Mount them, check the gauge monthly, and tell the household where they are. *Last updated: October 6, 2026\. Product availability re-checked.* *This page contains affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.*