Features:<br> Great Fit For Door: Flap Only. Features 4 hole at the top of the flap for perfect alignment.<br> Quick Easy Installation: Installs in just minutes with only screwdriver. It is easy, you will be kicking yourself for not replacing that old dogs door soon.<br> High-Quality Material: This flap compatible with Cats Door and Dog Door is made from flexible, durable, weather resistant TPU-materials.<br> Weather Tight & Weather Resistant: Magnetic strip at bottom of flap securely connects flap the magnetic interfaces at the bottom of your cats door / dog door to keep outside weather from blowing inside.<br> Compatible With Many Door: 2 Size of Replacement Flap to choose. Medium is about 32.2x20.5cm; Large is about 43x26cm.<br> Specifications:<br> Material: TPU-Material<br> Color: As Pictures Show<br> Size (Approx.):<br> M-32.2x20.5cm<br> L-43x26cm/16.93x10.24in<br> Weight (Approx.):<br> M-225g<br> L-430g<br> Note:<br> 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.<br> 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks<br> Package includes:<br> 1 Piece Dog Door Flap Replacement (Medium/Large)