The Petsafe Freedom Patio Pet Door Insert features a heavy duty frame with single pane safety glass. The pet door at the base utilizes the popular Freedom Pet Door. Installation is easy and does not require any cutting or on-site fitting. The unit will fit either left side or right side sliding door variations. A latch lock is included that allows you to lock your sliding door directly to the panel. Everything for installation is included: weather stripping, glass sweep and closing panel for the pet door are included. This patio pet door is designed to be installed permanently, adhering to your sliding door track with screws.