C.R. LAURENCE TSW1832 CRL Duo-Vent Four Panel Slider with Clear Glass for 1967-1972 Small Window GMC/Chevy Truck "Original" Four-Panel Design Gives the Widest Possible OpeningFully Contoured Powder-Coated Aluminum Frame with Narrow Stiles and Tight-Sealing WeatherstripSome Models Available in Up to Four Glass Colors