What Is a Fridge Cavity?
A fridge cavity is the dedicated recess in your kitchen cabinetry where a fridge sits. It's framed on three sides (left, right, and back), often with an overhead cabinet above. The cavity dimensions — width, height, and depth — determine which fridge models will physically fit in the space.
Unlike a freestanding fridge that sits wherever you like, a built-in or semi-integrated fridge has strict size requirements. Even a freestanding fridge placed in a kitchen alcove needs to fit within the cavity with adequate ventilation clearance on all sides.
How to Measure Your Fridge Cavity
You'll need a steel tape measure and ideally a second person to help. Take each measurement in millimetres — fractions matter with tight fits.
Width
Measure from left wall to right wall (or cabinet panel to panel) at three heights — floor level, mid-height, and top. Use the smallest measurement. Account for any skirting boards, wall tiles, or protruding hinges that reduce the opening.
Height
Measure from the finished floor to the underside of the overhead cabinet (or to the ceiling if there's no overhead cabinet). If the floor has tiles or thick vinyl near the cavity, measure from the actual floor surface the fridge will rest on.
Depth
Measure from the back wall to the front face of the cabinet opening. If there are power outlets on the back wall, note their position — a protruding plug or socket can reduce effective depth by 20–40mm.
Write it down
Record all three measurements: W × H × D in millimetres. Then subtract the standard clearances (50mm width, 75mm height, 100mm depth) to find the maximum fridge dimensions that will safely fit.
Standard Cavity Sizes in Australian Kitchens
Most Australian kitchens built since the mid-1990s are designed around one of two cavity widths. Older homes may have narrower or more irregular openings.
| Cavity Width | Typical Height | Typical Depth | Common Fridge Types |
|---|---|---|---|
| 600–650mm | 1750–1900mm | 680–750mm | Top Mount, Slim Bottom Mount |
| 700–800mm | 1750–1900mm | 680–750mm | Bottom Mount, Top Mount |
| 900–920mm | 1800–2050mm | 720–800mm | French Door, Side-by-Side |
| 950–1000mm | 1800–2050mm | 720–800mm | Large French Door, Side-by-Side |
Common Measuring Mistakes
Measuring only once
Walls and cabinets are rarely perfectly plumb. Always measure at multiple points and use the minimum.
Forgetting skirting boards
Skirting boards inside a cavity can reduce effective width by 10–25mm per side. Remove them if possible, or measure with them in place.
Ignoring power outlets
A double GPO on the back wall can protrude 40–60mm, significantly reducing usable depth.
Not checking the floor
Uneven tiles or a raised threshold at the cavity entrance can reduce effective height or prevent the fridge from rolling in.
Using the fridge's "nominal" size
Marketing dimensions are sometimes rounded. Always use the technical spec sheet dimensions for clearance calculations.
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