The window has slotted drain holes and a 3/4" flange around the entire window with pre-drilled holes for mounting. You’ll also enjoy two cabinet-style hinges that allow the window to swing up, a magnet-mounted on the frame to secure to the wall when open, and two swivel clips to fasten it closed. It can be mounted horizontally or vertically for gun or bow hunting. It is extremely quiet with little to no noise while opening and closing. Screws not included