Package Includes: The kit includes 2 round stainless steel RV vent screens (2.8" x 1.3"), 1 rectangular RV vent cover (8.5" x 6" x 1.3"), 4 spring-loaded hooks, 3 silicone rubbers, and 1 installation toolExcellent Quality: RV furnace screen is made of stainless steel, can withstand external forces; not easily bent and broken, offers maximum strength and corrosion resistance. Therefore it can be in contact with the outside world without problemsPest Control and Ventilation: The RV furnace vent cover is designed as a small, dense grid to keep small bugs from flying into the vehicle, but the screens don't stop the wind from blowing in, so you can breathe the fresh air inside the vehicle tooBonus Tools : RV furnace cover comes with silicone rubber, springs and other tools. Silicone rubber edges mount to the vehicle and won't scratch the surface; 2 retaining springs tighten the insect screen securely to prevent it from falling offSimple Installation: Install silicone rubber on the edge of the RV vent cover; hook one side of the spring into the mesh hole; push the aid into the mesh hole to catch the spring hook, then push outward until the spring hook snaps into the vent