Heavy duty full surface hinge – fire rated – clear finish – 1/32″ 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: 1/32″ (1 mm) minimum recommended for hinge side plus standard lockside clearance. Fasteners: dril-kwik screws and sex bolts.83″ length. Door reinforcement: none required to 200 lbs, heavier weight use 16 gauge channel. Fire rating: up to 3 hr. Metal and 90 min. Wood composite (with studs). Can be used with any door and frame material. Security molding.