https://www.openlearning.com/u..../christoffersenhaahr
https://squareblogs.net/triall....oan57/fitting-a-cat-
A upvc panel that has a flap for cats can help to minimize draughts in your home. By keeping your pets inside and keeping cold air out, you can save money on heating bills. is possible to fit cat flaps into both upvc panels and double glazing glass sealed units, however it can be more difficult than for doors made of timber. This is due to the fact that there are different thicknesses of upvc. Benefits A cat flap placed on your door will allo