https://pediascape.science/wik....i/Adding_a_Composite
It is recommended to hire an expert to install a cat flap at your home. DIY projects typically result in poorly-fitted pet flaps, which can let in drafts and cause higher energy bills. SheffLOCK can be fitted as a cat flap on all types of doors including wood, uPVC, composite and glass doors, as well as external walls. It takes about two hours to install a new cat flap. Cost of pet flap A pet flap lets your cat to come and go whenever it wants. If the flap is not properly installed, it will allow heat to escape from your