https://yogaasanas.science/wik....i/Adding_a_Composite
A cat flap could cause a draught if left open. This is a problem many cat owners experience. A draught-exclusion device can help to reduce cold air coming into the house, but a 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 are suitable for all types of installations including wall-mounted installations. The Material One of the most important aspects of a cat door is its insulation. Insulation keeps cold air out