A built-in microwave with a trim kit transforms a standard countertop appliance into a seamless, furniture-grade fixture that looks like it was designed with your cabinetry from the start. The trim kit bridges the gap between the microwave’s chassis and your cabinet cutout, eliminating the unfinished gaps and industrial look that ruin a custom kitchen.
I’m Mohammad Maruf — the founder and writer behind AirfryerBite. I’ve spent years analyzing the fit, finish, and installation requirements of built-in appliances to help buyers avoid the expensive mistake of buying a microwave that won’t mate properly with a trim kit or won’t fit their cabinet cutout dimensions.
Whether you are remodeling a kitchen or replacing an aging built-in, choosing the right built in microwave with trim kit means understanding cutout width, depth, and whether the trim kit is included or sold separately to avoid a costly second purchase.
How To Choose The Best Built In Microwave With Trim Kit
Selecting a built-in microwave is fundamentally different from buying a countertop model. The trim kit determines whether the final installation looks professional or slapped together. Ignoring cutout dimensions and trim kit compatibility is the most common—and most expensive—mistake buyers make.
Measure Your Cabinet Cutout First
Every built-in microwave requires a specific cutout width, depth, and height. The trim kit is designed to fit that exact cutout range. Measure the width of your cabinet opening at three points (top, middle, bottom) and the depth from the front edge to the back wall. Record the tightest measurement. A 27-inch or 30-inch trim kit width is standard for full-size built-in installations.
Trim Kit Included or Sold Separately
Some models, like the RecPro, include the trim kit in the box. Others, such as the Frigidaire Gallery, require a separate purchase of a dedicated trim kit (often priced between and ). Buying a microwave without verifying trim kit availability can delay your installation by weeks and add unexpected cost.
Ventilation and Power Rating
Built-in microwaves are often installed above a wall oven or in a cabinet, meaning they need proper ventilation to avoid overheating. Check whether the unit vents from the front, top, or rear, and confirm your cabinet allows airflow. Power output of 900 to 1250 watts is typical, but higher wattage means faster, more even cooking.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| RecPro RV Microwave with Trim Kit | Built-In | RV or small kitchen space | 900W, 1.0 cu. ft., trim kit included | Amazon |
| Farberware Over-the-Range | Over-the-Range | Over-the-range installation | 1000W, 1.7 cu. ft. | Amazon |
| SHARP Countertop Microwave | Countertop | Large family portions | 1200W, 2.2 cu. ft., inverter | Amazon |
| Midea Over-the-Range | Over-the-Range | Auto cooking presets | 1000W, 1.7 cu. ft., 300 CFM | Amazon |
| COSMO Over-the-Range | Over-the-Range | Sensor reheat cooking | 1000W, 1.34 cu. ft. | Amazon |
| GASLAND Over-the-Range | Over-the-Range | High CFM ventilation | 1000W, 1.9 cu. ft., 400 CFM | Amazon |
| Frigidaire Gallery Built-In | Built-In | Finished built-in look | 2.2 cu. ft., trim kit sold separately | Amazon |
| GE Profile Countertop/Built-In | Countertop/Built-In | Smart features and small space | 800W, 1.1 cu. ft., Wi-Fi | Amazon |
| Panasonic Countertop/Built-In | Countertop/Built-In | Even cooking with inverter | 1250W, 2.2 cu. ft., inverter | Amazon |
| KoolMore 30 in. Built-In | Built-In | Multi-function (convection/air fry) | 1000W, 1.6 cu. ft., convection | Amazon |
| SHARP Microwave Drawer | Built-In Drawer | Ergonomic drawer access | 950W, 1.2 cu. ft., drawer style | Amazon |
In‑Depth Reviews
1. Frigidaire Gallery Series GMBS3068BF Built-in Microwave
The Frigidaire Gallery GMBS3068BF delivers 2.2 cubic feet of cooking space inside a chassis designed specifically for built-in installation. Its sensor cooking and sensor reheat automatically adjust power levels and cook times, so you don’t have to guess settings for leftovers or frozen meals. The stainless steel interior resists stains and wipes clean quickly after spills.
This model requires a separate trim kit (available in 27-inch or 30-inch widths), which allows you to match the exact cutout dimensions of your cabinetry. The trim kit is sold under part numbers GMTK2768AF and GMTK3068AF. Users consistently report that the microwave runs quieter than average and that the existing trim kit from older Gallery models fits this replacement unit, saving money on a new trim purchase.
At 2.2 cubic feet, this unit accommodates large casserole dishes and multiple plates at once. The auto defrost function uses weight-based settings to thaw meat evenly without cooking the edges. For a true custom built-in look with premium sensor features, this is the top recommendation for most full-size kitchen renovations.
Why it’s great
- Large 2.2 cu. ft. capacity fits big dishes
- Sensor cook and reheat deliver consistent results
- Quiet operation with customizable beep volume
Good to know
- Trim kit sold separately (27 or 30 inch)
- Requires measuring cutout dimensions before purchase
2. GE Profile PCHK11S1WSS Countertop/Built-In Microwave
The GE Profile PCHK11S1WSS packs Wi-Fi connectivity and Scan-to-Cook technology into a compact 1.1 cubic foot form factor that can be installed as a countertop, built-in, or under-cabinet unit. The Scan-to-Cook feature reads barcodes on frozen meals and automatically sets the correct power and time, removing guesswork from reheating packaged foods. The matching trim kit is sold separately for built-in installations.
This microwave operates at 800 watts, which is lower than the 1000W+ found in many full-size models, but it heats evenly thanks to GE Profile’s precision engineering. Users with small cabinet spaces, RVs, or under-cabinet setups appreciate the slim 11.75-inch height and 24-inch width. The Wi-Fi functionality lets you control power, timer, and cook settings from a smartphone or voice assistant.
The stainless steel interior and exterior resist fingerprints, and the turntable ensures even heating. While the 800W output means slightly longer cook times for large items, the convenience of barcode scanning and smart home integration makes this a powerful choice for tech-savvy kitchens with limited space.
Why it’s great
- Scan-to-Cook for frozen meal convenience
- Wi-Fi and voice control capable
- Compact size fits tight cabinet cutouts
Good to know
- 800W output is lower than full-size models
- Trim kit sold separately
3. Panasonic NN-SN97KS Countertop/Built-In Microwave
The Panasonic NN-SN97KS uses Inverter Technology to deliver a seamless stream of power at any temperature level, eliminating the pulsing on-and-off cycle of standard microwaves. This results in food that heats evenly without rubbery edges or cold centers. The 1250-watt output makes it one of the most powerful microwaves suitable for built-in use, and the 2.2 cubic foot capacity handles large platters and family-sized casseroles easily.
Cyclonic Wave technology further improves cooking uniformity by reflecting microwaves off the interior walls at multiple angles. The 16.5-inch turntable rotates large dishes smoothly, and the built-in sensor automatically adjusts time and power based on steam emitted during cooking. Twenty preset menu items cover common foods from popcorn to frozen entrees.
The unit can be used as a countertop microwave or installed as a built-in with a separate trim kit. The stainless steel exterior resists smudges, and the interior is coated to prevent staining. For buyers who prioritize even heating and high power, the Panasonic inverter platform remains the benchmark in this category.
Why it’s great
- 1250W with Inverter for consistent power delivery
- 2.2 cu. ft. capacity with 16.5-inch turntable
- 20 preset menu items and sensor cooking
Good to know
- Trim kit not included
- Reports of interior light dimness
4. KoolMore 30 in. Built-in Convection Microwave with Air Fryer
The KoolMore KM-CWO30-SS integrates a 1000-watt microwave, a convection oven, and an air fryer into a single 30-inch built-in chassis. This eliminates the need for separate countertop appliances, freeing up kitchen space. The 1.6 cubic foot capacity is adequate for most family meals, and the convection mode circulates hot air for even baking and roasting.
The air fryer function uses rapid hot air circulation to crisp foods with minimal oil, making it a healthier option for fries, chicken wings, and vegetables. Users note that the air fryer setting takes about 25 percent longer than dedicated air fryer appliances, but the convenience of an all-in-one built-in solution offsets the extra time for many buyers. The stainless steel interior is easy to clean, and the controls use straightforward buttons.
One important installation consideration: this unit requires a dedicated 20-amp electrical outlet. Several reliability complaints mention failure within three years, so this is best suited for buyers who want the combined functionality and accept the trade-off in long-term longevity versus simpler microwaves.
Why it’s great
- Built-in convection and air fryer in one unit
- Frees countertop space from separate appliances
- Stainless steel interior for easy cleaning
Good to know
- Requires 20-amp dedicated circuit
- Air fryer slower than standalone models
- Some reports of failure after 3 years
5. SHARP SMD3070ASY Microwave Drawer Oven
The Sharp SMD3070ASY reimagines the microwave as a pull-out drawer rather than a door. The easy-touch automatic drawer system opens with a light press and closes hands-free, which is especially useful when your hands are full. The concealed control panel sits at a 45-degree angle when opened, keeping the interface hidden when not in use for a clean aesthetic.
This 30-inch drawer oven provides 950 watts of power and 1.2 cubic feet of interior space—enough for a 4-quart casserole dish or a 20-ounce beverage. The low-profile design installs beneath a countertop or wall oven, making it ideal for kitchens where a traditional door-swing microwave would be blocked by adjacent cabinets or counter space. Sensor cook and auto defrost functions simplify daily use.
The stainless steel finish matches standard kitchen appliances, and the unit is manufactured in the USA. Emptying a 4-quart casserole from this drawer is ergonomically easier than reaching into a tall door-mounted unit. This premium drawer design commands a higher investment, but for wheelchair-accessible kitchens or tight spaces, the drawer mechanism is uniquely functional.
Why it’s great
- Hands-free automatic drawer operation
- Concealed control panel for clean look
- Ergonomic access for all kitchen users
Good to know
- 1.2 cu. ft. capacity smaller than full-size models
- 950W output is below many built-in microwaves
6. RecPro RV Microwave with Trim Kit
The RecPro RV Microwave is built specifically as a direct replacement for Greystone and High Pointe RV microwaves, and it comes with the trim kit included in the box. The 900-watt output and 1.0 cubic foot capacity are compact by household standards but perfectly sized for RV, camper, boat, or small apartment kitchens. Eight express cook options cover popcorn, pizza, potato, beverage, soup, dinner plate, and fresh and frozen vegetables.
A picture-frame trim kit is included and creates the polished, seamless transition between the microwave body and the cutout. Both stainless steel and black color options are available, matching most RV interior decor. The child safety lock prevents accidental operation, and the digital touch pad control is straightforward to use.
The 30-second instant start button and one-touch express cooking simplify operation in tight RV galleys. Since the trim kit ships with the microwave, you avoid the surprise of an additional purchase. This unit is the most practical option for RV owners who need a drop-in replacement with a matching trim frame.
Why it’s great
- Includes picture-frame trim kit in the box
- Direct replacement for Greystone/High Pointe
- Child safety lock and express cook features
Good to know
- 1.0 cu. ft. capacity limits large dish sizes
- 900W output is lower than countertop models
7. Farberware Over-the-Range Microwave Oven
The Farberware Over-the-Range Microwave delivers 1000 watts of cooking power with a 1.7 cubic foot capacity, making it a solid mid-range option for replacing an existing over-the-range unit. It features auto cook settings for vegetables, snacks, and potatoes, plus intelligent time and weight defrost for effective thawing. The quick +30 seconds function and melt/soften options provide everyday convenience.
This unit is designed for over-the-range installation, meaning it replaces the range hood and vents smoke and odors upward. The stainless steel interior resists corrosion and is easy to wipe down after spills. A child safety lock prevents unintended use. The buttons-and-touch interface is straightforward, though users note the display is basic compared to touchscreen models.
While this microwave does not include a trim kit, it fits standard over-the-range cutout dimensions. Buyers should confirm the mounting bracket and existing cutout compatibility before purchase. For a budget-conscious replacement of a failed over-the-range microwave, this Farberware model offers dependable performance without unnecessary complexity.
Why it’s great
- 1000W for efficient cooking
- 1.7 cu. ft. capacity for family meals
- Multi-stage cooking and intelligent defrost
Good to know
- Over-the-range only, not for cabinet built-in
- Trim kit not included
8. SHARP Countertop Microwave with Carousel Turntable
The SHARP Countertop Microwave offers a family-sized 2.2 cubic foot capacity with 1200 watts of cooking power, plus a removable 16.5-inch carousel turntable. The gray interior and white LED display give it a modern appearance. Inverter Cooking Technology provides steady power delivery for even heating at all power levels, avoiding the uneven cooking found in standard pulsed microwaves.
This model includes sensor cook for precise reheating, a melt/soften function, and auto cook for popular menu items. The express cook key lets you press a single button for up to six minutes of cooking in 30-second increments. Weight and time defrost modes handle thawing accurately. The stainless steel exterior matches most kitchen appliance suites.
This unit is designed as a countertop microwave, so you would need to confirm trim kit availability if you want a built-in installation. The 24.4-inch width is wide for a countertop model, but the large interior accommodates multiple dishes or large platters without crowding. Users consistently praise the quiet operation and even heating performance.
Why it’s great
- 2.2 cu. ft. and 1200W for serious cooking
- Inverter technology for even heat distribution
- Sensor cook and express cook convenience
Good to know
- Countertop design, not built-in ready by default
- Trim kit availability may vary
9. Midea Over-the-Range Microwave Oven
The Midea MOR17BSA-SS combines an over-the-range microwave with a 300 CFM vent fan and 1000 watts of cooking power. The 18 auto menu settings provide one-touch cooking for popcorn, pizza, defrost, soft cheese, rice, potato, and more. The 1.7 cubic foot capacity and 12.4-inch turntable handle a rotisserie chicken or a 12-inch pizza without difficulty.
Ten power levels give flexibility for different heating needs, and the bright cooktop light illuminates the stove surface below. The adjustable fan speed on the vent hood effectively removes smoke and odors during stovetop cooking. The touch screen interface is clean and modern, offering sensor reheat and defrost options.
This unit is designed for over-the-range installation, not for cabinet built-in use. Installation is straightforward with the included template, and the unit looks attractive with no visible branding on the front. Some users note that the fan hum is louder than premium brands, but the overall value at this tier is strong for a replacement OTR microwave.
Why it’s great
- 18 auto menus for one-touch cooking
- 300 CFM vent with adjustable fan speeds
- Bright cooktop light for stovetop visibility
Good to know
- Fan is louder than some premium models
- Over-the-range only installation
10. COSMO Over-the-Range Microwave
The COSMO COS-2413ORM1SS offers 1000 watts of power and a 1.34 cubic foot capacity with ten power levels for precise cooking control. The integrated range hood vent removes smoke, odor, and moisture during stovetop use. Sensor reheat and cook modes detect when food is done by monitoring steam, then automatically shut off to prevent overheating.
Touch presets cover common tasks like melting butter, softening cream cheese, defrosting meat, and popping popcorn. The stainless steel and black finish integrates well with most kitchen decor. The turntable diameter measures 13.6 inches, sufficient for standard dinner plates and bowls.
The 23.8-inch width fits standard over-the-range cutouts, and the unit includes a glass tray, turntable ring, exhaust adapter, grease filters, and installation hardware. Sensor technology adds convenience by reducing guesswork. This is a capable mid-range option for buyers who want sensor cooking without the high price of premium models.
Why it’s great
- Sensor reheat and cook auto-shutoff
- 1000W with 10 power levels
- Complete installation kit included
Good to know
- 1.34 cu. ft. is smaller than some alternatives
- Over-the-range only installation
11. GASLAND Over-the-Range Microwave
The GASLAND Over-the-Range Microwave features a 1000-watt output, 1.9 cubic foot capacity, and a 400 CFM ventilation system. The high CFM rating moves more air than many OTR microwaves, making it effective for heavy cooking kitchens where smoke and steam accumulate quickly. Two fan speeds let you adjust vent power, and the quiet operation runs softer than normal conversation.
Nine one-touch preset menus cover popcorn, potato, veggies, pizza, snack, melt/soften, reheat, cook, and defrost. The +30 seconds function extends cooking time instantly. A removable rack enables two-level cooking inside the microwave, while the turntable on/off option adds flexibility for rectangular dishes. The 2-stage cooking function lets you program two power levels in one cycle for multi-step recipes.
This unit comes with a glass turntable, turntable support, removable rack, and two grease filters. Some users report the outlet plug requires a dedicated circuit setup, so check your existing outlet before installation. For buyers who need powerful ventilation combined with a spacious microwave interior, the GASLAND offers an impressive feature set at a competitive price point.
Why it’s great
- 400 CFM ventilation for heavy cooking
- 1.9 cu. ft. capacity with adjustable rack
- Quiet operation with adjustable beep volume
Good to know
- May require dedicated 20A circuit
- Over-the-range installation only
FAQ
Can I use any trim kit with any built-in microwave?
Do I need a trim kit if I am installing the microwave into a tight cabinet?
Final Thoughts: The Verdict
For most users, the built in microwave with trim kit winner is the Frigidaire Gallery GMBS3068BF because it offers a large 2.2 cubic foot capacity, quiet operation, and sensor cooking that auto-adjusts power—even though the trim kit is sold separately. If you want a trim kit included in the box for a drop-in RV replacement, grab the RecPro RV Microwave with Trim Kit. And for a drawer-style microwave that improves ergonomics and hides the controls, nothing beats the SHARP SMD3070ASY Microwave Drawer Oven.