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Installation in a Door or WallUpdated 21 days ago
Flappie can be installed in wooden doors, PVC doors, and walls. Here's what you need to know about cut-out sizes, materials, and thickness.
Required cut-out size
| Cut-out (H × W) | Notes |
|---|---|
| < 173 × 167 mm | Too small — needs to be enlarged |
| 173–210 mm (H) × 167–175 mm (W) | Fits without adapter |
| > 210 mm (H) or > 175 mm (W) | Too large — opening must be reduced (mounting adapter is for glass only) |
The minimum rectangular cut-out is 173 mm (H) × 167 mm (W). Unlike glass installations, there is no mounting adapter for rectangular openings — so the cut-out needs to be within the range above.
Floor clearance
There should be at least 27 mm between the bottom of the cut-out and the floor. This ensures the frame sits flush and your cat can step through comfortably.
Compatible materials
Flappie works with most common door and wall materials:
- Wooden doors — the most straightforward installation. A jigsaw is enough.
- PVC doors — works well, but check whether your door has reinforcement profiles inside that could interfere with the cut-out.
- Walls (brick, drywall, etc.) — fully supported, but you'll likely need tunnel extensions → depending on wall thickness.
Door/wall thickness
The standard Flappie frame fits doors up to 36 mm thick. For anything thicker, add tunnel extensions — each one adds 27 mm. Walls up to 200 mm are supported. See Tunnel Extensions: When and How Many? → for the full table.
Tips for a clean cut
Mark the cut-out carefully using the included template. For wooden doors, a jigsaw gives the cleanest result. For walls, consider having a professional handle the cut — especially for load-bearing walls or insulated walls with cavities.
Not sure about your setup? Send us a photo at [email protected] — we'll help you figure it out.