These quarter windows are GT Racing's replica of the factory 911R without an "open" louver. The windows are made from high quality vacuum formed PETG clear plastic with CLOSED louvers and include a stepped outside flange for installation in window frames with no factory seals. They are sold and priced in pairs. For folks who want to install these windows in their original frames or pop-out quarters, see GT Racing part #66F. Note: The Porsche factory glued in this window using clear silicone.
