Large Pet Door - BROWNNo more scratched doors.No more getting up late at night. Weather resistant self closing see through magnetic flap.Lockable interior barrier.Fits all walls and wooden doors.For large dogs up to 45kg (100lbs).Overall size: 468mm x 391mm (18 3/8" x 15 3/8").Cut out size: 354mm x 306mm (14" x 12").Maximum pet shoulder width: 290mm (11 3/8").3 Year Guarntee.