https://fakenews.win/wiki/Through_Wall_Cat_Flap
uPVC panels are a long-lasting and long-lasting alternative to composite doors. They are strong, durable and resistant to fire. They are also inexpensive and easy to maintain. A double-glazed sealed unit with an opening already cut for the cat flap is the simplest method to install a cat flap in a uPVC sheet. This is more secure than cutting a hole through an existing glass panel. UPVC Doors are easy to maintain Unlike traditional wooden doors, uPVC doors don't require frequent painting or sanding. They are also energy-efficient and can l