If you have a furry friend to account for when deciding on windows and doors for your home, Nu-line Windows are able to supply fully glazed glass doors / windows with doggy doors installed. It doesn’t matter if it’s a fixed window, sliding door or bifold door. To ensure that the glass won’t break we use 6mm toughened safety glass, which is significantly stronger than normal laminated safety glass. Our preferred doggy door is the transact dog door, which is 400mm in diameter. The actual flap is 250mm x 285mm (see image below). We can on request use different types of doggy doors as long as they are suitable for glass. For more information about locking mechanisms, positioning and cleaning please see the Transcat Dog Door website.