Replacement windows REQUIRE OEM stiffeners from the original windows. If you do not have these parts, please contact your local Jeep Dealership factory JL replacement windows - available as individual purchases in Black Twill, Tan Twill, and Black Diamond fabrics for your 2-door or 4-door JL Please Note: Side quarter windows do not include the factory corner stiffener when a replacement window is purchased, please make sure to remove the stiffener from the previous side quarter window and reuse it in the new replacement side quarter window. Instructions on how to do this are included with the replacement window purchase. Clear and tinted window options are available. Tinted windows offer an 18% tint for maximum protection to meet US and European regulations.