Before You Measure
Wall ovens are typically available in 24-, 27- and 30-inch nominal widths. However, these numbers are for the overall appliance category. They don't always work for the exact cabinet opening. To ensure you select the correct wall oven for your space, it's important to measure your existing wall oven, as well as the cabinet cutout. You'll need to compare these measurements to the measurements of the new model you want to install.
Tools You'll Need
Grab a tape measure and a place to record your measurements. It'll help if you have the model number of the existing wall oven. You'll want to measure to the nearest 1/8 inch. Don't round your measurements up.
Identify Electrical or Gas Connections
Take note of the gas connection or electrical junction box that's in the cabinet cutout. This will affect your usable cabinet depth.
Follow the manufacturer's instructions when removing a wall oven. They can be extremely heavy and you'll need a helper to assist you. Before removing or disconnecting an electric wall oven, turn off the power at the breaker.
Measure the Existing Wall Oven
These measurements help establish the approximate size of the appliance you're replacing.
Measure the Width
Measure horizontally across the widest part of the oven. Start from the farthest left edge to the farthest right edge. Don't include the exterior trim.
Measure the Height
Measure vertically from the highest point to the lowest point of the oven.
Measure the Depth
If possible, measure from the rear to the front of the oven. Mark if your measurement includes the door and handle.
Record Measurements
Record these measurements as overall appliance dimensions. Don't use them as substitutes for cabinet cutout measurements.
| Measurement | Your Measurement |
| Existing oven width | _____ inches |
| Existing oven height | _____ inches |
| Existing oven depth | _____ inches |
Measure the Cabinet Cutout
When you're selecting a new wall oven, measuring the cabinet opening is an important step. Follow these steps to ensure that you select the right size oven for your space.
Measure the Cutout Width
Measure the inside of the cabinet opening from left to right. Record those measurements at the top and bottom. If they differ, record both, noting the smaller dimension.
Measure the Cutout Height
Measure from the top to the bottom of the opening. Measure the left and right sides. Record both measurements and note the smaller dimension.
Measure the Cutout Depth
Measure from the rear wall to the front edge of the cabinet opening. Don't include the decorative trim or the cabinet door.
Check That the Opening is Square
Openings aren't always perfectly square. It's important to record the actual measurements instead of assuming that the sides are the same.
Measure From the Floor to the Bottom of the Cutout
For combination ovens or an install over a drawer or appliance, you'll need to measure from the floor to the bottom of the cabinet opening.
Record the Cutout's Measurements
Next, you'll need to record the measurements for the cabinet cutout.
| Measurement | Your Measurement |
| Cutout width — top | _____ inches |
| Cutout width — bottom | _____ inches |
| Cutout height — left | _____ inches |
| Cutout height — right | _____ inches |
| Cutout depth | _____ inches |
| Floor to bottom of cutout | _____ inches |
Always measure twice before ordering your new wall oven. Then check the installation instructions for the specific appliance that you want to purchase. Dimensions and clearances vary by manufacturer and model.
Compare Your Measurements With the New Oven
Dimensions and installation requirements vary by model and manufacturer, so it's important to compare the measurements you're recording with the new wall oven specifications.
| ✔ | Compare Measurements With the Model's: |
| Overall appliance dimensions | |
| Cutout width, height and depth | |
| Minimum and maximum allowable cutout dimensions | |
| Door and cabinet clearances | |
| Trim or flange overlap | |
| Electrical or gas connection location | |
| Cabinet support requirements. Wall ovens are heavy, so manufacturers specify minimum cabinet-support requirements for individual models. | |
| If applicable, look at the standard versus flush-installation requirements. |
Let's Get Started
Measuring for a new wall oven is an important first step to ensure that it'll fit properly. Once you follow our step-by-step directions to measure correctly, it's time to go shopping. Lowe's has hundreds of gas and electric wall ovens in a variety of styles, sizes and features from top brands. Shop online or visit your local Lowe's.