https://fkwiki.win/wiki/Post:R....eplacement_Upvc_Door
A cat flap could cause an air draught when left open. This is a frequent issue that cat owners face. A draught excluder can minimise cold air entering the home, but the cat flap that is insulated can provide greater protection against the elements. Tomsgates offers a variety of dog doors that are insulated and cat flaps that work for all types of installations including wall-mounted installations. The Material Insulation is among the most important aspects of a cat-door. Insulation is what keeps cold air out and war