Construction: Aluminum traffic doors are constructed of satin anodized aluminum sheet available in thicknesses of the .063" (1 / 16") standard duty or .090 (3 / 32") heavy duty. Hinge edge is constructed of either aluminum angle or aluminum extrusion riveted to the door skin. Door edge clearances are: top 1/2", bottom 1/2", vertical 3/16". Doors can be mounted in wood or metal jambs (1/4" steel reinforcement is recommended in hollow metal frames).
Type 1 - Spring butt hinges are mounted to 1-1/4" x 1-1/4" x 3/16" aluminum angle which is riveted to the .063 (1 / 16") or .090 (3 / 32") door skin on the hinge edge and runs the full height of the door. Spring butt hinges provide adjustable positive closing force ideal for applications requiring rapid closure. The positive spring pressure will also maintain doors in the closed position under drafty conditions.
Type 2 - Gravity hinges are mounted to an aluminum extrusion which is riveted to the door skin on the hinge edge and runs the full height of the door. Gravity hinges provide gentle closing action activated by an offset pivot at the top of the door and an adjustable cam plate at the bottom of the door.
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