Inspired by RV owners with pets, the Screen Defender Entry Door Screen Protector by Lippert Components is a black powder-coated aluminum screen that helps ensure your pet can't damage or break through your existing entry screen door. The Screen Defender is designed to be compatible exclusively with the full line of Lippert entry doors made for travel trailers and fifth wheel campers, as well as for motorized doors on motorhomes. And installation couldn't be easier. The Screen Defender fits and locks into existing channels on your Lippert screen door. Included extrusions fill gaps in the door if the opening is more than 20"H.