Use cat door easily adjustable to control your pets in and out, you do not worried about your pets out for your home without any notice. you'll no longer have to play doorman for your pet every time he needs to go out. Function Instruction of the Switches: 1.Turn Red and Green switches to both sides, pet is prevented from entering or exiting house.2.Turn Red and Green switches to right side, pet is allowed to enter house, but prevent from exiting house.3.Turn Red and Green switches to left side, pet is allowed to exit house but prevent from entering house.4.Turn Red and Green switches to middle, pet can leave and exit any time. The Large Size: outer size: 9.25w x 9.92H x 2.16DInner size: 7.08W x 7.48HCut-Out Size: 7.7W x 8.3H Generally, average installation height is around 10-15 cm from the floor. Installation Notes: 1.There are total 8pcs screws, 4pcs used on the front and the rest used on back.2.Generally, average installation height is around 10-15 cm from the floor.3.If the cat flap door is too thick for the door you want to be fixed to, use ascissors, saw or cutting machine to cut along the line A or B as shown. Thecutting scale is around 3 to 6 mm. For small cat flap door, the cutting scaleis around 1 to 3 mm. Package Includes: 1 X Large Cat flap door8 X Screws8 X Screw caps1 X Installation instructionsPREMIUM QUALITY: Made of ABS plastic, weather-resistant, the surface is smooth and durable, our cat flap door come with a 3-year warranty, if you have any questions please do not hesitate to contact us. EASY TO INSTALL: Complete instructions included, make you easily install in , doors and walls, Suitable for any wall or door that is up to 50mm thick. CAT FLAP: Transparent flap preferred by most pets, draft and rainproof brush sealed flap with closure. Brush strip to reduce energy loss and silent action, ensure that neither the pets nor the owner will be disturbed. 4 WAY LOCKING: The cat flap door could be adjusted by the Red and Green switches with tabs, can be set to open, in only, out only or fully locked, easily adjustable making it easy to keep your pets in or out. SIZE: It’s a large cat door, outer size: 9.25"(w) x 9.92"(H) x 2.16"(D), Inner size: 7.08"(W) x 7.48"(H), Cut-Out Size: 7.7"(W) x 8.3"(H), suitable for installation on doors, thin metal doors and walls, The cat door is suitable for walls with a thickness of 2.36 inches. If the wall exceeds this thickness, there will be gaps in the cat door. suitable for cats lighter than 17 Lb and waist circumference less than 23".Best Sellers Rank: See Top 100 in Pet Supplies. Target Audience: Cats, Dogs. Material: Acrylonitrile Butadiene Styrene. Color: Red. Brand: Reroucky. Size: Large. : B07M6JQRQ7. Manufacturer: Alysontech. Date First Available: December 27, 2018. Item model number: Alysontech. Package Dimensions: 10.2 x 9.49 x 2.32 inches; 1.04 Pounds. Is Discontinued By Manufacturer: No.