Feature 1Durable Construction: Heavy duty aluminum alloy frame with black paint spray and polished smooth, providing a good touch, rustproof and durable. 2Protect Privacy: RV windows adopts tinted tempered glass for protecting your privacy and make sure the sun doesn't heat up your RV interior. 3Prevent Rain Entering: Designed one way outlet on the window, ensure the rain flows out instead of leaking in. A solution for your leaking, broken and unsatisfactory Windows. 4Perfect Sealing: Fully sealed windows can keep your camper cold in summer and warm in winter, built in seals provides a barrier to insects and mold. 5Wide Application: Rounded edge design, suitable for 440x390mm window size, can be used for vertical installation, suitable for RV, camper, trailer, etc.Item Type: RV WindowsMaterial: Aluminum Alloy + Tempered Glass + RubberWindow Size: Approx. 440x390mm / 17.32x15.35inInstallation Thickness: 55mm-60mm/2.17-2.36inInstallation Hole Size: Approx. 410x360mm/16.14x14.17in, can be used for vertical installation, with fixed frameApplications: Tinted windows protect your privacy and ensure that full sunlight does not heat the interior of your RV. Fully sealed windows will keep your camper cold in the summer and warm in the winterApplication: Suitable for campers, RVs, construction vehicles and any other location where windows are needed .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x RV Window1 x Fixed Frame8 xScrewNoteInstallation is slightly more difficult, it is recommended to find a professional engineer to assist in the installation also get a perfect shopping experience