Spaniels, corgis, heading-dog pups — the dogs too big for a cat-sized flap and not built like a Labrador. The Intermediate gives them a 240 × 215 mm opening through the ranch slider or glass door they already stare through. Your glazier cuts a 320 mm circle; you choose Slim Line for single glazing or Dual Glaze to keep a double-glazed unit properly sealed.
Sizing check before you buy: the flap should clear your dog’s shoulders with a little room — measure shoulder height and width first, and if in doubt, size up to the Medium.
Specifications
| Suits | Semi-medium dogs |
|---|---|
| Glass thickness | Slim Line 4–13 mm · Dual Glaze 4–32 mm |
| Cut-out | 320 mm diameter |
| Flap opening | 240 × 215 mm |
| Overall size | 340 mm |
| Colours | Clear, White (both) · Black (Dual Glaze) |
Every Catwalk® and Dogwalk® door is made by Pet-Tek International with a UV-stabilised polycarbonate flap and a 4-way locking dial (open / in-only / out-only / locked), backed by a 3-year manufacturer’s warranty. Designed in New Zealand since 1999 and shipped from our Auckland base.

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