The PetSafe Sliding Glass Pet Door allows your pet to come and go as he pleases through your sliding glass door. This door features a heavy-duty aluminum frame with tempered safety glass. It fits left or right sliding doors and installation is easy with no cutting required. Weather stripping, glass sweep and closing panel are included for weather resistance. The flexible, soft flap with UV sun protection is easy to maintain. Two latches are included which enable the sliding glass door to lock.