Free entry and exit in both directions pet door cat door dog door hole cat puppy universal door installation wooden door glass door 1. Install the white door first and confirm the height (head) of the door that the furry child can push to determine the position of the white door. 2. Before you let the hairy kid practice gluing, take the hairy kid to practice slamming the door. 3. The small white circle of flowers, one side is pasted on the door frame, or the pasting surface can be heated with a hair dryer before pasting on the wall, which can increase the viscosity. Friendly Tips The more elastic cords wrapped around the white flower ring, the more effort it takes to open the door On the contrary, the fewer turns, the easier it is to open the door.It is recommended to use the number of turns of the rope at the beginning of use. First, do not put too many circles on “Relax” to increase Mao children’s confidence to complete the action of opening the door do.