Kitchen Appliance Cutout Dimensions: What to Measure Before Ordering Built-Ins
Built-in and semi-integrated kitchen appliances are designed to fit into specific openings. Ordering without confirming cutout dimensions first can mean expensive cabinet modifications, installer delays, or an appliance that simply cannot be installed. Here is the measurement guide for each major built-in category.
Freestanding appliances tolerate some dimensional variation because they do not fit inside a fixed opening. Built-in appliances do not. A wall oven that is one inch too wide will not fit the cabinet. A dishwasher that is 34.5 inches tall when the opening is 33.5 inches cannot be installed without cabinet modification. These are not problems you discover at the appliance store — they are problems you discover on delivery day if you did not measure first.
Standard cutout dimensions by appliance type
The figures below are typical industry standards in the United States. Always confirm against the specific model’s installation guide, which manufacturers make available as a PDF on their websites.
| Appliance | Standard cutout width | Standard cutout height | Standard cutout depth | Notes |
|---|---|---|---|---|
| Dishwasher (standard) | 24 inches | 33.5–34.5 inches (adjustable leg range) | 24 inches minimum | Most models have adjustable legs to fit heights between 33.5 and 34.5 inches |
| Dishwasher (compact / 18-inch) | 18 inches | 33.5–34.5 inches | 22–24 inches | Confirm before ordering; not all brands offer this size |
| Range (slide-in or drop-in) | 30 inches (most common); 36 inches (wider models) | Floor to countertop; typically 35–36.5 inches | 25 inches to back wall | Slide-in ranges fit flush with countertop; drop-ins require a base cabinet cutout |
| Wall oven (single) | 27 or 30 inches (confirm by model) | 27–29 inches typical; varies significantly by model | 23–25 inches | Cabinet cutout height is the most critical and variable measurement; always get installation guide |
| Wall oven (double) | 27 or 30 inches | 51–54 inches typical | 23–25 inches | Requires tall cabinet; height varies widely; measure your existing opening or cabinet plan exactly |
| Cooktop (4-burner) | Typically 29–30 inches wide cutout for a 30-inch unit | Counter thickness; typically 1.5 inches | 18.5–21 inches | Cutout is in the countertop; model spec sheet includes exact cutout template |
| Cooktop (5-burner / 36-inch) | Typically 34.5–35 inches cutout for 36-inch unit | Counter thickness | 20–22 inches | Same as above; use manufacturer cutout template |
| Under-counter refrigerator / wine fridge | 15, 18, or 24 inches (model-specific) | 33.5–34.5 inches | 23–24 inches | Many under-counter models require ventilation clearance at front panel; confirm ventilation type |
| Over-range microwave | Typically fits 30-inch range; requires 30-inch opening width minimum | Mounts to upper cabinet and wall; not a cutout appliance | 15–16 inches minimum from range surface to microwave bottom | Requires upper cabinet for mounting bracket; confirm stud locations and vent duct path |
How to take the measurements
- Measure the existing opening in three places for each dimension. Cabinets are not always perfectly square. Measure width at top, middle, and bottom; measure height at left, center, and right. Use the smallest measurement as your effective opening size.
- Measure the depth of the opening from the front face of the cabinet to the back wall, accounting for any pipes, ducts, or electrical boxes that protrude into the space.
- Locate all utility connections within or adjacent to the opening: gas line, electrical outlet, water supply, drain, and vent duct positions. Note the distance from each connection to the corners of the opening.
- Download the installation guide for your target model and compare your measurements to the required cutout dimensions. Do not rely solely on the product listing dimensions; the installation guide is the authoritative source.
When dimensions do not match
If your existing opening is smaller than the appliance requires, cabinet modification is necessary before delivery. This means hiring a cabinet maker or carpenter. If the opening is larger, trim kits are available for some appliances (particularly dishwashers and refrigerators) to fill gaps. Confirm trim kit availability and cost before finalizing the order, as these accessories can add $50 to $200.
Do not order a built-in appliance based on “close enough” measurements. A quarter inch of clearance is not nothing when the alternative is a cabinet modification on delivery day with a freight truck waiting at the curb.