TheDoorLatch Steel Cat Door Strap and Latch, Sturdy Door Holder for Keeping Dogs and Kids Out of Rooms, Litter Boxes, and Food, Steel Silver Color Cat Door Latch Price: $23.99 (as of 12/03/2023 07:12 PST- Details) & FREE Shipping.

NO CUT cat door. Opening Is Adjustable Between 3.5″ and 4.5″
Effective against persistent dogs and toddlers. Simple Springy One-Handed Operation
Won’t rip the paint off of your walls and doors. All fasteners are hidden.