Heavy duty half surface hinge – clear anodized aluminum finish – 1/8″ inset hager 780 series hinge for high frequency doors or heavy, medium frequency doors. Material: aluminum 6063-t6 – 1/16″ (1.5 mm) nominal leaf thickness. Clearance: 5/32″ (4 mm) minimum recommended for hinge side plus standard lockside clearance. 1-5/8 (41 mm) minimum frame face required plus 3/16 (5 mm) rotational clearance. Fasteners: dril-kwik screws and sex bolts. 83″ length. Door reinforcement: none required. Frame reinforcement: none required to 200 lbs, heavier weight use 16 gauge channel. Frame leaf alignment rib for proper hinge location. Security molding.