Specially Built for Classic Older Trucks "Original" Four-Panel Design Gives the Widest Possible Opening Fully Contoured Powder-Coated Aluminum Frame with Narrow Stiles and Tight-Sealing Weatherstrip. The CRL "Oldie" Truck Slider is built to the same quality specifications as our Duo-Vent, the finest four-panel Truck Slider on the market. It's our attention to the details that makes the Oldie Slider so special. The state-of-the-art fully contoured, thin profile, powder-coated aluminum frames have narrow stiles for maximum rear view, and tight-sealing weatherstrips to protect the interior. Tempered safety glass and metal locking latches for cab security are features that make CRL Sliders stand out from any others. Color: Clear Glass Years, Make and Model: 1967-1972 Large Window GMC/Chevy Truck Installation Type: Gasket NAGS Number: DY90012CK1 Frame Measurements: Width 57-7/8 in (1470 mm); Height 13-15/16 in (354 mm). I mportant Note: All CRL gasket-set truck sliders will fit OEM style backglass gaskets. If an OEM style slider is to be replaced, a new gasket may be required.