Dog Doors for a Border Collie
Intelligent and agile — a medium to large dog flap works well. A typical Border Collie weighs 12–22 kg. Quick learners; most use a new flap within a day.
Get a free quote for your Border CollieWhat size opening does a Border Collie need?
Medium dog door, roughly 245 × 290 mm.
How to measure your Border Collie
- 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: The step-over usually sits around 150–200 mm. We check the panel has enough depth above the opening for the flap frame before we cut.
Not sure? Try the Will It Fit checker.
Microchip compatibility for a Border Collie
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.
Border Collie microchip tip
Collies are borderline: a slim collie can use a microchip pet door, a broader one needs a manual medium door.
Got the chip number handy? Check it against every flap we fit.
Getting a Border Collie used to the dog door
Collies learn a flap in a single session. One person each side and a few treats is normally enough.
Fitting note: Quick learners; most use a new flap within a day.
Dog doors we recommend for a Border Collie
These are the models we fit most often for Border Collies, in order of preference.
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
Large dog door (e.g. PetSafe Staywell Large)
Roomy enough for retrievers, collies and similar large breeds.
- Typical opening 314 × 390 mm
- Manual lock; microchip options available
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
Ready to give your Border Collie the run of the garden?
We fit into uPVC, composite, wooden and aluminium doors, windows and new toughened glass panels.
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