1.PLEASE NOTE SIZE - Small:Outer 11.4×9.4",Inner 8.25×10.5". Large:Internal Frame: 12.2 x 14inch,External frame: 14 x 16 x 0.5inch,please measure the size of your pet and compare to the door size before purchasing. 2.AUTOMATIC CLOSE & LOCKABLE - Dog/Cat door with magnetic flap closures, built-in magnetic can keep the door automatically closed when your dog/cat leaves. 3.SUITBLE FOR ALL DOOR - Two slid lock on the flap bottom help you to lock the dog/cat screen door, ensure your pet stay inside home when unsupervised. Inbuilt magnet will automatically close the door after your pet leaves. 4.DURABLE - Ultrahard ABS material and the screws will fix the dog/cat screen door firmly; Firm inner shaft hung with pet screen door frame; the inserted wire mesh make the flap anti-scratch; cute paw design bring more fun to your home. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.