1. Good Sealing: The window is designed with rubber to ensure complete sealing and waterproof performance, with a drainage hole underneath to ensure rainwater flow.     2. Tempered Glass: E4 certified 4mm thick black tempered glass, solid construction, effective resistance to ultraviolet rays, sound and heat, providing a comfortable interior environment.     3. Slid Window: Push pull opening, one side of the glass can be pushed and pulled and the opening side has an insect screen to provide a barrier to insects.     4. Complete Kit: Can be installed in portrait or landscape orientation, the package includes drain plugs, retaining rings, and screws to provide a solution for your broken .     5. Application: Suitable for standard wall thickness of 5mm& 8209;7mm or 53mm& 8209;54mm, can be used in storage compartments, living rooms, lounges, suitable for campers, RVs, construction vehicles, etc.         Specification: Item Type: RV      Material: Aluminum alloy + tempered glass + rubber     Window : 680x450mm (please allow 3mm error due to manual measurement)     Installation Thickness: 5mm-7mm or 53mm-54mm sheet metal mounting (please allow 2mm error for glue fixing)     Cut Out Size: Approx. 650x420mm/25.59x16.54in, can be used for longitudinal or horizontal installation     Applicable: Suitable for campers, RVs, engineering vehicles and other locations that require               Package List: 1 x 650x420mm RV Window    1 x Fixed Box     1 x Pack of Water Guide Hole Stopper     1 x Pack of Fixing Screw