1、DOUBLE MAGNETIC: Pet door adopts double magnetic design, which play the function of automatically closing the window. 2、LOCKING PIECE: Dog screen door with a locking piece, rainy days you can insert the locking piece into the slot, the pet into can not go out. 3、THICKENED DESIGN: Pet screen door is design thickened, making the inner page stable and more durable. 4、EASY TO INSTALL: Pet door is easy to install, more convenient to open and close, save time and effort, to prevent pets from running around by themselves. 5、DURABLE MATERIAL: Cat sliding screen door is made of plastic material, which is clearly visible and securely blocking the entry and exit door. 1 x Dog Door Item Type: Dog DoorMaterial: PlasticSize: Large: Approx. 20*20* 1.5cm/ 7.9* 7.9* 0.6inSmall: Approx. 29* 24.5* 1.5cm/ 11.4* 9.6* 0.6in