Insect Bug Sliding Door Screen using 1/2" x 1-5/8" Framing : Sliding Door Screens are measured using two measurements, a width and height. This sliding door screen is made out of the Insect "Bug" screen fabric. It's purpose is to provide protection from flying insects for the inside of the home. This sliding door is very heavy duty, it is made out of the 1/2" x 1-5/8" wide Aluminum framing, very strong and sturdy. This door is likely a much higher grade than what would have come from the sliding door originally from the manufacturer.