●<b>Dimensions:</b><br>Outer Size: 9.25" x 9.84" x 2.17"(W x H X D);<br>Inner size: 7.48" x 7.08" x2.17"(W x H);<br>Cut-Out Size: 7.48" x 7.08" (W x H)<br><br>●<b>Suitable for:</b><br>Fit for cat lighter than 17.64 lb and waist circumference shorter than 23.62".<br>Any wall,window and door' thickness less than 1.69 inches;<br><br>●Function Instruction of the Switches:</b><br><br> ← → Turn Red and Green switches to both sides, and the pets are prevented from entering or exiting the room.<br>→ → Turn Red and Green switches to the right side, the pet is allowed to enter the house but prevent from the existing home.<br>← ← Turn Red and Green switches to the left side, the pet is allowed to exit the house but prevents from entering the house.<br> → ← Turn Red and Green switches to the middle, and the pet can leave and exit any time freely.<br><br><b>● Note:</b><br><br> Before install, draw the cat door frame on a paper board and cut it down. Use a pencil draw around the edge of the cut paper on the door.<br> If the door is not the solid wood door or solid wood composite door, but the doop splint, please prepare a wooden strip in advance<br> for blocking door gap. It would be better to have some putty ash for smoothing the door gap.<br> The depth of door/window you are going to install to had better more than the thickness 1.69 inches, to screw in 8 screws from both sides easily. <br> Otherwise, you have to cut down some tunnel depth as the Assemble Instruction part shown first to fit the door or the window.<br><br><b>Package Includes of Large Cat Door:</b><br><br>1 x Large cat flap door;<br>8 x Long Screws;<br>8 x Short Screws;<br>8 x Screw caps;<br>4 x double-side taps;<br>1 x Installation instructions.