Mortice door latches and locks come in different sizes and working out the right one for your door can be tricky. The most common sizes in the UK for internal doors is 63mm and 76mm. This is the overall measurement of the latch length, often referred to as the case. Read more
Here is a simple guide to help measure for a door latch.
How to determine the backset on your door.
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Keep Dogs Out | TGIOW cat door latch(US Patent 11-795741-B1 Licensed) is designed for pet homes to allow your cats to enter and leave the room freely,
TGIOW Cat Door Latch, 1 Pcs Flex Latch Cat Door Holder, Cat Door Stopper to Keep Dog Out of Litter Boxes and Food, 5 Adjustable Size Strap 2.5-6