Absolutely! The new Big Cat Door is designed to seamlessly retrofit into the cutout of the old door, so you can upgrade without the need for additional cutting. If your current door is installed in glass, the new door will fit perfectly in the old cutout, but you will need an installation adaptor to ensure it's properly supported in the glass. This adaptor is essential for maintaining the door's stability and aesthetics in glass installations.

Yes, the Big Cat Door is designed to accommodate cats of all sizes. Its spacious opening and adjustable settings make it a great choice for households with cats of different sizes and breeds. Additionally, the Big Cat Door can also work for small dogs up to 25 lb (11kg) with a maximum body width of 7 ¼ in (184mm) and a maximum body height of 7 ¾ in (196mm).

Yes, the Big Cat Door can be installed in glass with the assistance of a professional glazier or glass manufacturer and a set of Big Cat Door Glass Installation Adaptors (sold separately). You will also need a tape measure, marker or grease pencil, safety glasses, work gloves, Phillips screwdriver, level, and exterior grade caulk (optional). It is important to note that it is not possible to cut holes in tempered or double paned glass except at the time of manufacture.

Installing a pet door can provide your pet with the freedom to come and go as they please, reducing the need for you to constantly open and close the door for them. This can also help reduce meowing, scratching and whining at the door. Additionally, pet doors can provide your pet with access to the outdoors, allowing them to get exercise and fresh air.