SPECIFICATIONS: Glass Thickness: 5/16" (8 mm) to 1/2" (12 mm) Tempered Safety Glass Special Feature: Offers choice of Standard Model factory set at standard 0° closing position, or 5 degree Pre-Set Model for tighter closure into shower interior. Construction: Solid Brass Hinge Swings: 90 degree in and 90 degree Out Closing Type: Self-Centering when within 15 degree of Closed Position