Hardware Specifications (Hampton, Bedford, Gramatan Series)

14 gauge standard or low headroom 2" or 3" galvanized steel track. Horizontal tracks are 15" radius and reinforced with 2"x2"x12 gauge galvanized steel angles.

Bearing plates are 13 gauge steel. 1" diameter bearing with 18 steel ball bearings. Springs shall be Oil tempered high cycle, mounted on a 1" diameter steel torsion tube and secured with set screws. Doors 12' or wider shall have a 1" diameter keyed solid steel shaft.

Cable drums are cast aluminum and 4" or 5" in diameter depending on the weight of the door.

Lifting cables are 5/32" diameter 7x7 galvanized aircraft cable. Bottom brackets are 12 gauge galvanized steel and secured to the bottom of the door with 1/4" diameter carriage bolts.

Top brackets are 12 gauge and shall be adjustable.

Hinges are graduated 14 gauge galvanized steel to match the contour of the vertical track. Hinges shall be secured with 1/4" diameter carriage bolts or 1/4" diameter lag screws.

Rollers shall be 2" or 3" in diameter depending on the weight of the door.

Horizontal struts are 22 gauge galvanized steel and attached to the door with 1/4"x1" lag screws

Standard 15" Radius Track Clearance Requirements

Track Options

1. Front Mounted Low Headroom (8-1/2")
2. Rear Mounted Low Headroom (4-1/2")
Add 2" for Garage Door Opener.

Stretch springs available on limited sizes.