https://pediascape.science/wiki/Cat_Flap_Double_Glazing Allowing your cat to go in and out of the house as it pleases is a great method to keep your pet physically active and mentally stimulated. A flap can aid in reducing accidents with toilets by making it easier for cats to leave the home when required. Measure the Door A cat flap allows your pet to go and come at their own pace, without opening the door for them. This is a great way to keep your pet in the house when you are away or at home. It also helps keep unwanted pests from getting into your. It is important to examine the door's measurements to ensure that you get the right size cat flap. There are various sizes available. This ensures that you get the right size to fit into your upvc door, otherwise, it could be too small or large and your cat will struggle to use it. Before doing anything but take a ruler and take measurements of the width of the door in various locations along its edge. Also, you should measure the height of the door in a few places. A door that is too high will cause your cat to do a gymnast routine every time it wants to use the flap. If you're not sure of how to measure the door, it could be a good idea to seek assistance from a glazier, or someone who performs this kind of work regularly. They will be able determine if your door is suitable for cat flaps, and will advise you on what size flap to buy. Once you've got your measurements, the next thing to do is mark out the shape of the hole on the door. This will provide you with an idea of how to cutting the hole out and will prevent you from making mistakes that could cost you money in the end! Make sure that you put the hole in the right location. For instance, if you're fitting the cat flap in a patio door, you must ensure that the hole doesn't sit too close to any hinges, since this could cause leakage and issues with the seal. It is best to delegate the installation of the cat flap onto the glass door to an experienced glazier.