Retractable Dog Fence:The retractable range of this retractable dog fence is 22"-39.37", you can adjust it to the right length according to your needs Safe and reliable: 9.45 inches,it can block your pets from entering, preventing them from running around Simple Installation:The short pet door does not need to be drilled to install, it can be reused, and it is equipped with two sets of anti-skid pads (silicone pad and transparent film), which can be selected and used according to the specific environment Wide Use:This pet fence is widely used in the living room, room, balcony, staircase, kitchen, bedroom, and bathroom, it can be used for small or medium dogs High-Quality Material:The pet door is made of steel and PP, stable and durable, with good and load-bearing, and not easy to deform