Do you want to install a cat flap but your feline friend is particularly large no problem the ferplast swing 9 cat flap is designed to allow your feline or dog to crawl through with ease thanks to the universal installation methods the flap can be mounted on any wooden door and even masonry walls the innovative system not only protects your home from drafts and winds but also allow you to control the door opening using four different methods only exit only entry entry and exit or closed