C.R. LAURENCE BRW1846 CRL Duo-Vent Four Panel Big Rig Slider with Clear Glass 1976+ Freightliner Various Models "Original" Four-Panel Design Gives the Widest Possible OpeningFully Contoured Powder-Coated Aluminum Frame with Narrow Stiles and Tight-Sealing WeatherstripMetal Latches for Security NAGS Number DY90047CK1