Features: 1.Kit Information: Includes 2 round mesh covers, 1 square mesh covers, 1 rectangular mesh covers, 2 mounting calipers, 6 springs, perfect for your application! 2.Security Protection: Large enough clearances both ensure ventilation and avoid the entry of flying bugs, protecting your furnace and fan from pests. 3.Stainless Steel: Heavy duty stainless steel mesh vent screen for maximum strength and longest service life, rust resistant for outdoor use. 4.Precision Craftsmanship: The exhaust vent mesh cover is finely designed to effectively optimize air circulation and provide a more comfortable living environment. 5.Simple Installation: The set is simple in design and easy to install, no professional tools are needed, you can easily install it by yourself, saving time and energy. Specification: Item Type: RV Furnace Vent_x000D_ Material: Stainless Steel_x000D_ Set Includes: 2 round mesh covers + 1 square mesh cover + 1 rectangular mesh cover + 2 mounting calipers + 6 springs_x000D_ 2 Round Mesh Covers: 2.8 inches diameter x 1.3 inches height_x000D_ 1 Square Mesh Cover: 4.5 x 4.5 x 1.3 inches_x000D_ 1 Rectangular Mesh Cover: 8.5 x 6 x 1.3 inches Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.