Cat flap - let your cat pass through any interior door. - give your cat access to her litter box without giving her litter box access to your home! this durable cat flap fits any interior door thats 1 to 2 (2.5 cm - 5 cm) thick. Your cat can come and go from the room where her litter box is housed - even when the door is closed. A sliding lock gives you the option to bar access whenever you choose. Features: -for cats 12 lbs (5.4 kg) and under -transparent flap -easy-to-use slide lock -high-impact plastic...