http://brewwiki.win/wiki/Post:....Cat_Flap_Installer_N
Cat flaps are a great option to allow your pet to move around whenever it wants. You can opt for a lockable flap to prevent other cats and animals from entering your home. Installing a cat flap on the bifolding door is feasible provided that the door is made of toughened glass. The frame must not be rotten or damaged. The procedure is basically the same as installing one in an wooden or uPVC door. Easy to install Add a cat flap on your bifold door, allowing your pet to enter and exit the house without having to open or shut the d