Dog Doors for a Cavalier King Charles
Gentle and small — a standard or medium dog flap is perfect. A typical Cavalier King Charles weighs 3–10 kg. A large cat flap or microchip pet door is often enough.
Get a free quote for your Cavalier King CharlesWhat size opening does a Cavalier King Charles need?
A large cat flap or small dog door (around 214 × 256 mm).
How to measure your Cavalier King Charles
- 1Measure your dog's shoulder height from the floor — the opening needs to be at least that tall.
- 2Measure the widest point, usually the chest or hips, and add 50 mm.
- 3Watch how your dog goes through a normal doorway: if they duck, the opening needs to be taller.
- 4Measure the chest clearance from the floor so the step-over is easy, not a jump.
Where we fit it: Small dogs need a low step-over, so we fit the flap as low in the door panel as the frame allows — typically 80–120 mm above the floor.
Not sure? Try the Will It Fit checker.
Microchip compatibility for a Cavalier King Charles
UK dogs must be microchipped by law, and those chips are standard 15-digit FDX-B — exactly what the microchip pet doors we fit read. Larger dog doors are usually manual 4-way lock; chip-controlled access is available up to the SureFlap Microchip Pet Door size.
Cavalier King Charles microchip tip
Cavaliers fit the microchip pet door easily, so their legally required chip doubles as the door key.
Got the chip number handy? Check it against every flap we fit.
Getting a Cavalier King Charles used to the dog door
Tape the flap open, call your dog through from the other side, then lower it gradually over a few days. Never push them through — one bad experience takes weeks to undo.
Fitting note: A large cat flap or microchip pet door is often enough.
Dog doors we recommend for a Cavalier King Charles
These are the models we fit most often for Cavalier King Charless, in order of preference.
SureFlap Microchip Pet Door (dog version)
Chip-controlled access for small dogs — keeps neighbouring animals out.
- Opening 214 × 256 mm, cut-out 256 × 300 mm
- Reads all standard 15-digit FDX-B chips; stores up to 32 pets
SureFlap Microchip Pet Door
The large chip-reading door we fit for big cats and small dogs.
- Opening 214 × 256 mm, cut-out 256 × 300 mm
- Reads all standard 15-digit FDX-B chips; stores up to 32 pets
Medium dog door (e.g. PetSafe Staywell)
The usual fit for medium dogs up to around 18 kg.
- Typical opening 245 × 290 mm
- Manual 4-way lock; microchip versions available on request
Ready to give your Cavalier King Charles the run of the garden?
We fit into uPVC, composite, wooden and aluminium doors, windows and new toughened glass panels.
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