Kitchen & Dining · Small

Best Countertop Microwave With Trim Kit

Which kit-ready microwave suits your cabinet opening? Built-in, RV and countertop options, plus the fit and clearance checks that matter before you order.

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At a glance

2
Summit 24" Built-in Microwave with Trim Kit, Stainless Steel - SMBI24
Best Kit-Included Built-In
Summit Appliance

Summit Appliance 24 Inch Built-in Microwave

Detailed reviews

Frigidaire Gallery Series GMBS3068BF 2.2 cu. ft. Built-in Microwave Oven, Trim Kit Sold Separately
#1 PickBest Built-In Look
Frigidaire

Frigidaire Gallery Built-in Microwave 2.2 Cu Ft

A large built-in oven that delivers the flush, finished look this search is after, once the right kit is added.

Ideal for: Remodelers replacing a built-in who want a roomy cavity and a matching stainless look, and are happy to buy the trim kit separately.

We'd start here for anyone replacing a built-in in a kitchen that already has matching appliances. The 2.2 cu. ft. cavity holds large casserole dishes, and the sensors set power and time on their own, which suits reheating and everyday cooking. Trim kits in 27-inch and 30-inch widths are offered for it, but they are sold separately, so plan for that extra purchase and check the cutout figures (24 3/4 inches wide, 20 deep, 16 3/4 high) against your opening.

Owners report that it fits cabinet cutouts well, slides in easily, runs surprisingly quietly and slots in beside other Gallery appliances. Installers swapping this model in for an older unit describe shifting the support rails and tightening the lower trim screws first to stop the door rubbing, so allow a little time for adjusting. A common complaint is the lock: the unlock button has to be pressed after every use before the door opens. Controls draw mixed opinions too, with some wanting a vegetable auto button. Feedback also includes a report of sparking inside the cavity soon after the one-year warranty ended, which is worth keeping in mind when weighing a unit with only a year of coverage.

Pros

  • Roomy 2.2 cu. ft. cooking space
  • Sensor cooking sets power and time
  • Quiet running reported by owners
  • Fits cabinet cutouts neatly

Cons

  • Unlock button needed after every use
  • Trim kit sold separately
  • Sparking reported after warranty year
Key features (4)
  • Built-in design with a roomy 2.2 cu. ft. cavity
  • Sensor-controlled power levels and cook times
  • Stainless steel finish matching Gallery appliances
  • 27-inch and 30-inch trim kits offered separately
Summit 24" Built-in Microwave with Trim Kit, Stainless Steel - SMBI24
#2 PickBest Kit-Included Built-In
Summit Appliance

Summit Appliance 24 Inch Built-in Microwave

The only full-size pick here that ships with its stainless trim kit already in the box.

Ideal for: Buyers with a 24-inch cabinet opening who want the microwave and a stainless trim kit in a single purchase.

The Summit solves the compatibility puzzle by shipping with its own stainless steel kit for 24-inch cabinet openings, and front venting lets it sit high or low in a run of cabinets, including over a wall oven. Its 1000W output, preset keys for common foods, weight or time defrost and a panel lock make it a capable everyday unit. At 75 pounds it is by far the heaviest model on this page, so plan for solid support.

Owners report quiet running, a clean custom look and straightforward installation, and they like how it fits unusual cutouts. Feedback also raises a gap between the kit and the cabinet, a start key that doubles as the +30 seconds key, and a green display that clashes with other appliances, plus a unit that went completely dead after some use. Compared with the Frigidaire Gallery Built-in Microwave 2.2 Cu Ft, you skip the separate kit purchase, though the opening here is smaller, at 22 1/2 inches wide.

Pros

  • Stainless trim kit included
  • Front venting allows several install positions
  • Panel lock prevents unwanted changes
  • Presets for everyday foods

Cons

  • Visible gap around trim reported
  • Start key doubles as +30 seconds
  • Sudden power loss reported once
Key features (4)
  • 1000W built-in microwave with included stainless trim kit
  • Fits 24-inch openings, above or below the counter
  • Multiple power levels with weight or time defrost
  • Child safety lock on the control panel
InVision Built-In RV Microwave with Trim Kit, 0.9 Cu. Ft., Stainless Steel
#3 PickBest Compact RV Pick
Rugged Trail Products

Rugged Trail Products InVision RV Microwave

A small built-in sized for RV kitchens that comes with its own trim kit.

Ideal for: RV owners who need a small stainless built-in with the trim kit included and are fine trading capacity for space.

This one is aimed squarely at motorhomes and travel trailers, where a kit-ready unit has to be small. The 0.9 cu. ft. cavity handles leftovers, frozen meals, snacks and warm drinks, and the stainless trim kit in the box gives a factory-installed look. Multiple power levels, preset functions and a simple touchpad cover the basics. We'd treat it as the space-saver of the group: against the RecPro 1.0 Cu. Ft. RV Microwave, it is lighter at 28 pounds and a touch smaller inside, with a stainless finish rather than black. Measure the existing opening before ordering, since RV cutouts vary, and treat this as a replacement for a small unit rather than a family-sized oven.

Pros

  • Trim kit included in the box
  • Light at 28 pounds
  • Stainless finish for RV interiors
  • Presets and multiple power levels

Cons

  • Smallest capacity of these picks
Key features (4)
  • 0.9 cu. ft. built-in microwave for RV kitchens
  • Included trim kit for a built-in appearance
  • Electronic touchpad with digital display
  • Multiple power levels with preset cooking functions
RecPro 1.0 Cu. Ft. RV Microwave with Trim Kit, Black
#4 PickBest RV Swap
RecPro

RecPro 1.0 Cu. Ft. RV Microwave

A kit-included RV microwave built to drop into spaces left by older units.

Ideal for: RV owners replacing an older Greystone or High Point microwave who want a quick swap with the kit included.

The RecPro is pitched as a direct replacement for Greystone or High Point microwaves, and its picture-frame kit means nothing extra to buy. Eight express cook options, from popcorn to soup to vegetables, plus a 30-second instant start keep operation simple, and it comes in stainless or black; this listing is the black one.

Owners report that it fits fifth wheels and RV kitchens well, installs quickly (the old support tray can often stay) and heats fast. The theme that splits feedback is size: it is right for some openings, but the advertised measurements are questioned and the frame is said to run short on the sides, so confirm your opening before buying. Next to the Rugged Trail Products InVision RV Microwave, it adds a little capacity at 1.0 cu. ft. but weighs 37.15 pounds, about nine pounds more.

Pros

  • Picture-frame trim kit included
  • Eight express cook options
  • Quick installation reported by owners
  • Fits many RV kitchens

Cons

  • Frame reportedly narrower than advertised
Key features (4)
  • 1.0 cu. ft. RV microwave with included picture-frame kit
  • Eight express cook presets and 30-second instant start
  • Stainless or black finish options
  • Direct replacement for Greystone and High Point units
Sharp SMC2266KS 2.2 cu. ft. 1200W Stainless Steel Countertop Microwave Oven
#5 PickBest Large Countertop
Sharp

Sharp 2.2 Cu. Ft. Countertop Microwave Oven

A family-sized countertop oven with real power, and an optional kit for a built-in look.

Ideal for: Households that want a high-wattage, roomy countertop microwave and may add the optional trim kit later.

This is the strongest countertop-first choice. The 1200W output and 2.2 cu. ft. cavity with a 16.5-inch turntable handle big plates and casseroles, while inverter cooking, sensor cook, two-stage cooking and ten power levels give finer control. The maker also offers an optional trim kit for a 27-inch or 30-inch custom look, sold separately, so the built-in route costs an extra purchase and some measuring.

Owners report that it is nearly silent in operation, heats evenly with fewer cold spots, and performs well on sensor reheat, with plenty of presets. Compared to the Toshiba Countertop Microwave Oven 1.2 Cu.Ft, it offers nearly twice the capacity and 200 more watts, which suits families heating several dishes together.

Pros

  • 1200W output with inverter cooking
  • Spacious interior for big dishes
  • Very quiet running reported
  • Even heating with sensor reheat

Cons

  • Trim kit sold separately
Key features (4)
  • 2.2 cu. ft. cavity with 16.5-inch carousel turntable
  • Inverter cooking with ten power levels
  • Sensor Cook, Auto Cook and weight or time defrost
  • Optional trim kit for 27-inch or 30-inch openings
Upgraded GMTK3068AF Trim Kit for frigidaire Gallery 30" Built-In Microwave
#6 PickBest Trim Kit Alone
Kavoll

Kavoll 30" Built-In Microwave Trim Kit

Not a microwave: a stainless frame for one specific Frigidaire model.

Ideal for: Owners of the matching Frigidaire built-in who need the 30-inch frame rather than a new microwave.

Think of this as the accessory pick. It is a 30-inch stainless frame for Frigidaire's Gallery built-in line, and the parts list covers the front frame, a bottom vent assembly, two mounting rails and six screws. It suits owners who already have that unit or are buying the Frigidaire Gallery Built-in Microwave 2.2 Cu Ft and want the 30-inch width.

The maker is clear that it does not fit every built-in of similar size, so check the model before ordering. Installation notes call for a level cabinet, verified cutout dimensions, open air paths and at least 3 inches of clearance above an electric oven. With no owner reports to draw on, the specifications are the guide.

Pros

  • Includes frame, vent assembly, rails and screws
  • Stainless finish for a built-in look
  • Allows install above an electric oven

Cons

  • Fits only one Frigidaire Gallery built-in line
  • Cabinet must be level for flush fit
Key features (4)
  • 30-inch stainless trim kit for a built-in look
  • Front frame, bottom vent assembly and two mounting rails
  • Six screws included for installation
  • Designed around one Frigidaire Gallery built-in model
TOSHIBA Countertop Microwave Oven, 1.2 Cu.Ft, 1000W, Black
#7 PickBest Small Countertop
Toshiba

Toshiba Countertop Microwave Oven 1.2 Cu.Ft

A compact sensor-equipped countertop model for apartments and offices, with durability caveats.

Ideal for: Small households, apartments or offices that want a simple sensor-equipped countertop microwave and can accept mixed reports on longevity.

The Toshiba is a plain countertop unit rather than a kit-ready one, so it earns its place for small spaces and a conventional counter. A 12.4-inch glass turntable in a 1.2 cu. ft. cavity, 1000W output, smart sensor cooking, six presets and ten power levels cover everyday heating. Defrost by weight or time and an easy one-touch start keep it simple, and owners like the simple control pad and sleek look.

Feedback on staying power is the issue: owners report units quitting after a couple of years, failures within months are raised too, and heating results are mixed, with units reported to stop heating altogether. Feedback also notes the seams inside make corners harder to clean. For a roomier option, the Sharp 2.2 Cu. Ft. Countertop Microwave Oven steps up in capacity and power.

Pros

  • Smart sensor adjusts time and power
  • Simple control pad owners like
  • Sleek black stainless appearance
  • Six presets and ten power levels

Cons

  • Durability concerns in owner feedback
  • Seamed interior harder to clean
Key features (4)
  • Compact cavity with a 12.4-inch glass turntable
  • 1000W output with ten power levels
  • Six presets including sensor reheat
  • Weight or time defrost with one-touch start

Side by side

PickItem weightItem dimensions
#1 Best Built-In Look
Frigidaire
—19.63 × 24.43 × 13.63 inches
#2 Best Kit-Included Built-In
Summit Appliance
75 pounds17.75 × 24.25 × 17 inches
#3 Best Compact RV Pick
Rugged Trail Products
28 pounds15.5 × 21.5 × 12 inches
#4 Best RV Swap
RecPro
37.15 pounds14.75 × 20.5 × 15 inches
#5 Best Large Countertop
Sharp
33.7 pounds19.6 × 24.4 × 13.6 inches
#6 Best Trim Kit Alone
Kavoll
——
#7 Best Small Countertop
Toshiba
31.1 pounds20.5 × 17.1 × 12.8 inches

How to Choose a Countertop Microwave With a Trim Kit

Will this kit fit this exact microwave?

Trim kits are cut for specific models, so a similar size is not a guarantee. The Frigidaire needs its own 27-inch or 30-inch kit, the Kavoll frame is meant for that Frigidaire Gallery line, and the Sharp has an optional maker kit in the same two widths. Where you want the safest route, the Summit and both RV models come with theirs. Our look at the best microwave with trim kit goes wider than this countertop-focused list if you want to compare more built-in options.

What should you measure before ordering?

Start with the opening itself, then compare it against the cutout the maker states, since the frame has to cover gaps without squeezing the cabinet. The Frigidaire lists a cutout of 24 3/4 inches wide, 20 deep and 16 3/4 high, and the Summit is built for an opening of 15 3/4 high, 22 1/2 wide and 18 1/4 deep. Check these points too:

How much capacity and wattage do you need?

Capacity sets what dishes fit, and wattage sets how fast they heat. The Sharp combines 2.2 cu. ft. with 1200W, the Frigidaire offers the same 2.2 cu. ft., and the Summit and Toshiba sit at 1000W; the RV models are smaller at 0.9 and 1.0 cu. ft. Air frying is a separate shortlist; the best countertop microwave with air fryer covers it, and none of the picks here list that function.

Why does airflow matter once the microwave is framed in?

A framed microwave still needs air to move. The Kavoll kit's installation notes warn against sealing the unit or blocking intakes and exhaust, and ask for at least 3 inches of clearance above an electric oven, while the Summit's front-venting design is what lets it go over a wall oven. Whichever you pick, leave the vents clear, since overheating shortens a unit's life.

Our picks at a glance

Frequently asked

Which of these picks include the kit?

The Summit Appliance 24 Inch Built-in Microwave, the Rugged Trail Products InVision RV Microwave and the RecPro 1.0 Cu. Ft. RV Microwave ship with theirs. The Frigidaire Gallery Built-in Microwave 2.2 Cu Ft and the Sharp 2.2 Cu. Ft. Countertop Microwave Oven use kits sold separately, and the Kavoll 30" Built-In Microwave Trim Kit is only the frame.

Can a regular countertop microwave be built in?

Only with a kit made for that model, because frames are cut to specific dimensions and vent layouts. The Sharp 2.2 Cu. Ft. Countertop Microwave Oven is the countertop pick here with a maker kit option, in 27-inch and 30-inch widths, while the Toshiba Countertop Microwave Oven 1.2 Cu.Ft is a standard countertop unit best left on the counter.

What if the kit does not line up perfectly after installation?

Small adjustments are common. One approach owners describe is moving the support rails to match the feet and tightening the lower trim screws before the upper ones, which stopped a door from rubbing. If a gap remains, as owners of the Summit Appliance 24 Inch Built-in Microwave mention, check whether it is symmetrical and whether the opening matches the stated cutout.