https://theflatearth.win/wiki/....Post:Fitting_a_Cat_F
https://longshots.wiki/wiki/Ch....oosing_Cat_Flap_Insu
https://lovewiki.faith/wiki/In....stalling_a_upvc_Door
A professional cat flap fitter will place your pet's door in a door or the wall. The wall-mounted version is more secure since an intruder is unable to get through. It also helps to prevent the spread of draughts and also reduces your energy costs. The Tasker will mark where the cat flap should go in your door, then drill the corners. They will also sand the edges of the frame to create a smooth surf