Measurement:
Opening: 40.5cm x 29.6cm (16"h x 11.75"w)

Cut Hole: 45.1cm x 36.2.cm (17.75"h x 14.25"w){interior hole} 48.3cm x 36.8 cm (19"x 14.5") {exterior hole}. Exterior dimensions are slightly larger as the 'tunnel' is angled downwards to allow rainwater to drain out rather than in.

Overall: 48.8cm x 41.8cm (19.25"h x 16.5"w)

Breed Size Guide: German Shepherds, Labradors, Collies, Setters, Dobermans, Dalmatians, Boxers, Pointers, & Golden Retrievers

Colour: Silver, White and Bronze

Plexidor Door Unit frames up to 4.45cm (1 3/4") thick household door; includes: petdoor with lock, security plate, and exterior trim pieces.

Plexidor Wall Unit frames up to 30.5cm (12") deep wall: includes petdoor with lock, security plate, aluminum exterior frame & tunnel unit, stainless steel screws, caulk, & aluminum jig saw blade.