Cat Mate Small Magnetic Collar Key - Set of 2 Flap Any gap that causes a

Any gap that causes a draft between sliding glass doors decreases energy efficiency and lets in cold air

Key is 1 3/8" long

Option of small or large flap pet door for cats and small dogs

Full Battery Operation: If an AC outlet isn't located nearby

Cat Mate Small Magnetic Collar Key - Set of 2 Flap Any gap that causes aSmall, magnetic Cat Mate cat collar magnets for Cat Mate 254, 255, 256, 363, and Dog Mate 259 The package comes with a set of 2 pet door collar keys Pet collar keys are waterproof Magnetic pet door keys activate the sense operator on the pet door to unlock it Collar not included This works with the Cat Mate Small Electronic 254 and 255 Cat Door, Cat Mate 256, and 363 Electronic Cat Door, and the Dog Mate 259 Small Dog Electronic Dog Door. For use by