Cat Flaps for a Devon Rex
Petite and playful — standard cat flaps work great. A typical Devon Rex weighs 2.5–4 kg. Small and light, so a soft-action flap is easiest for them to push.
Get a free quote for your Devon RexWhat size opening does a Devon Rex need?
A standard cat flap opening (around 165 × 171 mm) is plenty.
How to measure your Devon Rex
- 1Measure the widest point of the chest just behind the front legs — that sets the opening width you need.
- 2Measure from the floor to the top of the shoulders for the opening height.
- 3Add about 20 mm to each measurement so there is no squeeze on the way through.
- 4Measure the rise from the floor to the belly — the bottom of the flap should sit just above that.
Where we fit it: We set the bottom of the flap roughly 100–120 mm above the floor level on the outside. Small cats don't like a big step up, so we fit lower in the door than we would for a large breed.
Not sure? Try the Will It Fit checker.
Microchip compatibility for a Devon Rex
Every microchip flap we fit reads the standard 15-digit FDX-B chip used by UK vets and rescue centres, so your cat's existing chip works — no new chip and no collar tag needed. SureFlap models also read older 9 and 10-digit chips. If your cat isn't chipped, a collar-tag or manual flap is the alternative.
Devon Rex microchip tip
Light cats sometimes hesitate at the lock noise — the chip reads well, it's the flap action that matters most here.
Got the chip number handy? Check it against every flap we fit.
Getting a Devon Rex used to the cat flap
Prop the flap open for the first few days so your cat can see straight through, then let it down once they're using it happily. Treats on the far side and a calm house beat any amount of pushing.
Fitting note: Small and light, so a soft-action flap is easiest for them to push.
Cat flaps we recommend for a Devon Rex
These are the models we fit most often for Devon Rexs, in order of preference.
SureFlap Microchip Cat Flap
Our default fit for average-sized cats — reliable chip reading and a 4-way manual lock.
- Opening 165 × 171 mm, cut-out 212 × 212 mm
- Reads all standard 15-digit FDX-B chips plus older 9 and 10-digit chips; stores up to 32 pets
PetSafe Microchip Cat Flap
A budget-friendly microchip option that suits small and slim cats.
- Opening 142 × 120 mm, cut-out 168 × 170 mm
- Reads 15-digit FDX-B chips and stores up to 40 pets
PetSafe Manual Cat Flap
Simple, draught-resistant and ideal if your pet isn't chipped or you want a spare panel.
- Opening 152 × 152 mm, cut-out 173 × 173 mm
- No chip reader — 4-way manual lock only
Ready to give your Devon Rex the run of the garden?
We fit into uPVC, composite, wooden and aluminium doors, windows and new toughened glass panels.
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