Owner’s manual
What is the standard size for a countertop microwave?
There is no single “standard” countertop microwave size, but most are designed to fit common counter depths and upper-cabinet clearances. For Kenmore model 72166022500, the use and care guide lists overall dimensions of 19 7/16 in. wide x 11 1/4 in. high x 16 3/4 in. deep with a 1.0 cu. ft. cavity.
Most countertop microwaves fall into these common ranges (useful when comparing brands like Kenmore, GE, and Whirlpool):
- Width: about 19 to 24 inches
- Height: about 11 to 14 inches
- Depth: about 14 to 20 inches
- Capacity: about 0.9 to 2.2 cu. ft.
Use these model-specific numbers when measuring your space:
| Measurement | Kenmore 72166022500 | What to measure at home |
|---|---|---|
| Overall width | 19 7/16 in. | Countertop opening width |
| Overall height | 11 1/4 in. | Clearance to cabinet above |
| Overall depth | 16 3/4 in. | Depth to wall or backsplash |
| Recommended ventilation space | 4 in. (each side, top, rear) | Open air around the cabinet |
For the exact specs and placement notes, use the 72166022500 use and care guide.
Microwaves need airflow to prevent overheating and nuisance shutdowns. Using the correct overall dimensions and leaving the recommended ventilation space helps protect internal components like the cooling fan and thermostat.
Last updated: January 2026
Do countertop microwaves need space around them?
Yes. For the Kenmore 72166022500 countertop microwave, we recommend leaving at least 4 inches of clearance on the left, right, top, and rear so the cooling air can circulate and the vent openings stay unobstructed (this is required for proper ventilation). See the 72166022500 use and care guide.
Keep these minimum spaces open at all times:
- Left side: 4 inches
- Right side: 4 inches
- Top: 4 inches
- Rear: 4 inches
- Front: keep the door area clear so it can open fully and exhaust air is not trapped
| Location around microwave | Minimum space | What it prevents |
|---|---|---|
| Left and right sides | 4 in. | Overheating from restricted intake airflow |
| Top | 4 in. | Heat buildup above the cabinet and blocked exhaust |
| Rear | 4 in. | Blocked vents and hot air recirculation |
Use these setup checks to avoid nuisance shutdowns and heat damage:
- Set the microwave on a level, stable countertop.
- Do not place it in a tight cubby unless you can maintain the clearances above.
- Do not cover the top or sides with liners, towels, or decor.
- Keep the vent openings free of grease and dust buildup.
- Avoid placing it next to heat-producing appliances.
Countertop microwaves pull in cooling air and push warm air out through vent openings. When the space around the cabinet is too tight, heat can build up, cooking performance can drop, and internal safety devices can shut the microwave down to protect components.
Last updated: January 2026
Where is the best place to put a countertop microwave?
For Kenmore countertop microwave model 72166022500, the best place is a flat, level, sturdy counter with open airflow around the cabinet. We recommend leaving at least 4 inches of clearance on the left, right, top, and rear for proper ventilation (and never placing it over a range or other heat source).
- Set it on a level countertop that can support the microwave’s weight.
- Keep 4 inches of open space on the left, right, top, and rear sides.
- Place it near your main prep and cooking area to reduce spills when moving hot food.
- Keep it away from water sources (sink, wet countertop areas, dishwasher steam).
- Avoid tight cabinets or enclosed shelves unless the manual specifically allows it.
- Keep the power cord fully supported; do not let it hang over the counter edge.
- Over a range or cooktop: this model is not designed for built-in or over-the-range use.
- Next to heat-producing appliances: excess heat can shorten component life.
- Near a sink or wet areas: moisture increases shock risk and can damage controls.
- Confined spaces: blocked vents can cause overheating and poor performance.
| Location | Good idea? | Why |
|---|---|---|
| Open countertop with 4-inch clearance | Yes | Best ventilation and stability |
| Countertop corner with open space behind and above | Yes | Works if clearances are maintained |
| Inside a narrow cabinet shelf | No | Airflow is usually restricted |
| On/over a range or cooktop | No | Heat exposure; not designed for this use |
| Near sink/dishwasher | No | Water and steam exposure |
Proper placement protects the cooling airflow paths so the microwave can run at full power without overheating. It also reduces spill and burn risks when handling hot containers.
For model-specific installation and clearance details, follow the 72166022500 owner's manual.
Last updated: January 2026
Can a countertop microwave be mounted under a cabinet?
No. The Kenmore 72166022500 is a countertop microwave and is not designed for built-in or under-cabinet mounting; it needs open airflow space on all sides for safe ventilation. Use the placement clearances and safety notes in the 72166022500 use and care guide.
This model is intended to sit on a level countertop, not be enclosed or hung under a cabinet. For proper ventilation, we follow these placement rules:
- Keep at least 4 inches of clearance on the left, right, top, and rear
- Do not cover or block any openings
- Do not place it over a range, cooktop, or other heat-producing appliance
- Keep the glass turntable and roller rest installed during use
| Setup type | Typical hardware | Works for 72166022500? | Main risk if done anyway |
|---|---|---|---|
| Countertop placement | None | Yes | None when clearances are followed |
| Under-cabinet mounting | Mounting plate, bolts, bracket | No | Overheating, blocked vents, unsafe support |
| Built-in cabinet enclosure | Trim kit and approved cabinet cutout | No | Heat buildup and damage from restricted airflow |
We only recommend cabinet placement when the microwave is specifically rated for built-in use or approved with a trim kit. Since this model is not designed for built-in use, keep it out in the open. If you are temporarily placing it in a large open shelf, follow these basics:
- Maintain the 4-inch ventilation clearances on all sides
- Make sure the rear and top vents are not blocked by the cabinet
- Plug directly into a properly grounded outlet (no extension cord)
- Stop using it if the cabinet area gets unusually hot or the microwave shuts down
Microwaves rely on airflow to cool internal components. When vents are restricted (common with under-cabinet mounting or tight cabinet openings), heat can build up quickly and lead to poor performance, nuisance shutoffs, or component damage.
Last updated: January 2026
