Show Plate and Window Wandow Class Clau Gla Glass Is made In two wn ways was One by blowing the other by rolling The blown Iown glass known n n ns window gl glass 1 5 Is not Dot 11 uniform In section may contain Imperfections bubbles sand s marks streaks warped harped surfaces and Is graded accordingly Plate glass Is lre free from the Imper Impert t fD q t J G o a y TO tarp gea f 0 seen Jt j s it Is more costly Single Singe strength window glass may be used for small pines panes and storm sl sash b Light Lightweight weIght plate glass one one- one eighth eighth Inch thick Is recommended for tor small windows |