Glass, tempered, large curved, original Airstream 1966-68 only, 39" wide x 20.5" high. Original glass was .100" thick, new is .125" 1968 stainless steel trims will not fit. Glass comes with gasket and instuctions how to enlarge track for thicker glass. For 1966 models only, we recommend 34143 Silicone for installation.
THIS WINDOW IS AN EXACT CURVATURE FIT.