A dishwasher cutout is the opening in your cabinets where the machine sits. Most full-size built-in models are designed for a common opening width, with compact and slimline types for smaller spaces, but exact dimensions vary, so always check the maker’s installation guide.
Common Size Groups
Dishwashers are usually sold in a few groups. The names differ between regions, but the idea is similar.
- Full-size: The usual width for a standard kitchen run. It holds the most place settings.
- Slimline: Narrower than full-size, suited to small kitchens.
- Compact or countertop: Sits on a worktop and connects to a tap or small fitting.
- Drawer style: One or two pull-out drawers that fit into a cabinet opening.
What the Cutout Means
The cutout is described by three numbers: opening width, opening height and opening depth. These are measurements of the space, not the machine itself. A machine needs slightly less than the opening so it can slide in and be adjusted.
| Measurement | What it describes | Check |
|---|---|---|
| Width | Gap between cabinets | Measure at top and bottom |
| Height | Floor to underside of worktop | Allow for adjustable feet |
| Depth | Front to wall behind | Allow for hoses and cables |
How to Measure Your Opening
- Clear the area and empty the cabinet if you are replacing an old unit.
- Measure the width at the top, middle and bottom. Use the smallest figure.
- Measure the height from the floor to the worktop underside at the front and back.
- Measure the depth from the cabinet face to the wall.
- Note where the water supply, drain and power outlets are placed.
- Compare your figures with the installation sheet of any model you consider.
Other Details to Check
- The door swing and whether it clears nearby drawers and handles
- Floor type, since tile height can change the clearance
- Panel-ready fronts, which need a matching cabinet panel
- Hose and cable lengths
Installation Note
Connecting water, drain and electrical supply is work for a licensed plumber and electrician. Do not modify cabinets or supply lines without proper qualifications.
Reading an Installation Sheet
Every installation sheet includes a diagram with labelled arrows. The numbers shown are the machine body, the minimum opening and the space needed for hoses. Read all three before you decide, because a model that fits on paper can still be tight once the hoses are included.
FAQ
Can a slimline unit replace a full-size one?
It can physically sit in a larger opening, but it may leave gaps that need a filler panel and a professional fit.
How much capacity do I need?
Think about how many people you cook for and how often you run a cycle. The maker’s guide lists capacity in place settings.
The Short Version
A cutout is the space in your cabinets, and its width, height and depth decide what fits. Measure carefully, compare with the installation sheet, and use licensed trades for connections.