Kenmore 40572129310 microwave Parts

There is no single “standard” countertop microwave size, but most fall in a common range. For Kenmore model 40572129310, the external dimensions are 20.5 x 15.9 x 12.8 inches (W x D x H) with a 1.2 cu. ft. capacity; confirm placement and clearances in the owner's manual.

Typical countertop microwave size ranges

Most countertop microwaves are designed to fit on standard counters and under many upper cabinets. Common ranges are:

• Width: about 20 to 25 inches
• Depth: about 14 to 20 inches (not counting handle, if applicable)
• Height: about 11 to 15 inches
• Capacity: about 1.0 to 2.2 cu. ft.

Model 40572129310 size and key specs

Here are the model-specific specs pulled from the documentation:

Spec	Kenmore 40572129310
External dimensions (W x D x H)	20.5 x 15.9 x 12.8 in
Oven capacity	1.2 cu. ft.
Turntable diameter	12.4 in
Rated output power	1100 W

Space and clearance planning (important)

Even if the microwave “fits,” it still needs airflow.

• Leave at least 3 inches between the microwave and adjacent walls
• Keep one side open
• Leave at least 12 inches of clearance above the microwave
• Do not block intake or outlet vents
• Use a level, stable surface and keep the unit away from heat sources

Why it matters

Correct sizing prevents blocked vents, overheating, and poor performance. It also helps you avoid buying a microwave that fits the footprint but fails due to inadequate top or side clearance.

Last updated: February 2026

Kenmore microwaves are a solid choice for everyday reheating, defrosting, and basic cooking, especially when you want straightforward controls and good value. For the Kenmore 40572129310 countertop microwave, following the safety, cookware, and use guidelines in the owner's manual helps you get the best performance and reliability.

What “good” usually means for a countertop microwave

Most customers judge a microwave on a few practical points. Here’s what typically matters most:

• Heating performance: how evenly it warms common foods (leftovers, beverages, frozen meals)
• Ease of use: clear keypad, simple presets, readable display
• Noise and vibration: fan and turntable sound during operation
• Durability: door feel, keypad response, and consistent heating over time
• Safety and proper use: using microwave-safe containers and avoiding arcing

How to get the best results from your Kenmore 40572129310

Using the right cookware and habits makes a bigger difference than most people expect.

• Use microwave-safe glass, ceramic, and labeled microwave-safe plastics
• Avoid metal, metal-trimmed dishes, and aluminum trays (they can cause arcing)
• Vent or pierce covered foods and “boiling bags” as directed to prevent steam buildup
• Keep the oven openings clear; do not cover or block vents
• Clean the door and sealing surfaces with mild, nonabrasive soap and a soft cloth

Quick cookware guide (safe vs. avoid)

Material	Typical result	Recommendation
Glass/ceramic	Heats food well	Use
Microwave-safe plastic wrap/containers	Convenient for covering	Use (keep wrap off food)
Paper towels/wax paper	Helps prevent splatter	Use short-term with supervision
Metal or metal trim	Can spark and arc	Avoid
Aluminum tray	Can arc	Avoid; transfer food

Why it matters

“Good” performance depends heavily on proper cookware and safe operation. Arcing from metal or using the wrong containers can cause burn marks, poor heating, and unnecessary wear.

For more troubleshooting if performance drops, we recommend our guide: why is my microwave not heating.

Last updated: February 2026

The Kenmore 40572129310 countertop microwave has an oven capacity of 1.2 cubic feet. This capacity is listed in the specifications section of the owner's manual, along with key specs like wattage and exterior dimensions.

Where to confirm the capacity

You will see the capacity listed as “Oven Capacity: 1.2 cu.ft.” in the specifications for model 405.72129310.

• Look for the Specifications section
• Confirm you are viewing model 405.72129310 (not a different 405.7212xxxx variant)
• Use capacity (cu. ft.) to compare interior space between countertop microwaves

What 1.2 cu. ft. means in everyday use

A 1.2 cu. ft. countertop microwave is a mid-size unit that typically handles common items like dinner plates and standard microwave-safe containers.

• Good fit for most 10 to 12 inch plates
• Works well for reheating meals and cooking packaged foods
• Often paired with a 12 inch class turntable (this model lists a 12.4 inch turntable diameter)

Quick spec snapshot (from the manual)

Spec	Value
Oven capacity	1.2 cu. ft.
Output power	1100W
Turntable diameter	12.4 in
External dimensions (W x D x H)	20.5 x 15.9 x 12.8 in

Why it matters

Capacity helps you choose cookware that fits, estimate how evenly food will rotate on the turntable, and compare this Kenmore countertop microwave to other models when shopping for a replacement or planning counter space.

Last updated: February 2026

On your Kenmore countertop microwave model 40572129310, the model number is printed on the rating label, typically located around the door opening (door frame) or on the back panel. The owner's manual also lists the supported model series.

Common places to check

Look for a silver or white sticker or plate with the model number and electrical ratings.

• Door frame area behind the door (around the opening)
• Inside edge of the control panel area (near the door opening)
• Back panel of the microwave cabinet
• Side panel of the cabinet (less common on countertop units)
• On the packaging or purchase paperwork (if you still have it)

What the label usually looks like

Most Kenmore microwaves use a rating label that includes the model number plus power information (watts) and sometimes a serial number.

What you see on the label	What it means	Why you need it
Model number (example: 40572129310)	Exact product ID	Ensures correct parts and diagrams
Serial number	Production identifier	Helps match revisions when ordering parts
Electrical ratings (volts, amps, watts)	Power requirements	Helps confirm proper outlet and circuit

Why it matters

We use the exact model number to match the correct Kenmore microwave parts list, diagrams, and troubleshooting information. Even small model number differences can change door switches, fuses, or control components.

Quick tips before you write it down

• Copy the model number exactly as printed (all digits, no spaces).
• Take a clear photo of the label for reference.
• If the label is worn, check the back panel next; it often stays readable longer.

Last updated: February 2026