Features:

• ☞Size --- The medium cat door, inner size 2.17"(D) x 6.18"(W) x 6.30"(H), it's suitable for cat lighter than 15.43 lb and waist circumference shorter than 15.75". And its outer size is 2.17"(D) x 7.56"(W) x 7.87"(H). Note: The medium and small are different in depth and back structure, the small size is suitable for glass door
• ☞SAFE&THOUGHTFUL --- The transparent cat flap let cat see through the door. Exterior rain seal is for waterproof. Brush strip eliminates noise from the door closing. 4-way door control meets cat's daily need. The magnet between the 2 switches is for aligning the flap after swings. Inner frame edge get polished, so as not to hurt cat
• ☞4-WAY SWITCH MODE --- The cat flap door could be adjusted by the Red and Green switches with tabs to 4 modes: out, in, both in and out, and fully locked. The tabs are the key factor for the 4-way switch
• ☞EASY TO INSTALL --- 8 screws and its caps included in the set makes you easily install in windows, doors, cupboards, panels and walls, etc. Screw in the 8 screws for 4 holes from both sides, if the cat door is too thick for the door you want to be fixed to, you could cut the tunnel depth using a scissors, saw or cutting machine
• ☞EXCELLENT QUALITY --- Made of ABS material, weather-resistant, the surface is smooth and durable. Please peel off the protective film of the cat flap panel after you install the cat door

Details:

Size available and cat applies to:

>Large:

Outer size: 9.25"(W) x 9.84"(H) x 2.17"(D) Inner size: 7.08"(W) x 7.48"(H) x 2.17"(D), it's suitable for cat lighter than 17.64 lb and waist circumference shorter than 23.62".

>Medium:

Outer size: 7.56"(W) x 7.87"(H) x 2.17"(D) Inner size: 6.18"(W) x 6.30"(H) x 2.17"(D), it's suitable for cat lighter than 15.43 lb and waist circumference shorter than 15.75".

>Small:

Outer size: 7.56"(W) x 7.87"(H) x 0.71"(D) Inner size: 6.18"(W) x 6.30"(H) x 0.71"(D), it's suitable for cat lighter than 13.22 lb and waist circumference shorter than 11.81".

Note:

1). Due to manual measurement error, 1~2mm difference in size is normal, thanks.

2). Make sure that the width and height(shoulder level) of the pet are inferior to the pet screen door, thanks.