Wood fitting pet doors
Click on the cat or dog wood-fitting links above to find all the information you require on the size of the pet door, and what size of pet it suits. It will also show whether you require a slimline version which suits thinner substrates from 11mm to 30mm or a tunnel version which suits 11mm to 50mm. An added advantage of the tunnel version is the tunnel does not need to be cut, it simply closes up to the substrate thickness you are installing the pet door into.
Glass fitting pet doors
Click on the cat or dog glass-fitting links above to find slimline versions and dual-glaze versions depending on whether you want your pet door for single or double glazing. As you will require a glass company or glazier to prepare the glass for you, they can confirm what pet door you require.