Features |
N/A
|
Curtain |
N/A Standard flat curtain flats, interlocking type, roll-formed 24 gauge steel. Lateral slat movement and curtain wear controlled by galvanized, malleable cast iron endlocks fastened to every other slat. Flat Slats: 2-1/2 inches high by 3/4 inch deep. |
Bottom Bar |
N/A Fabricated from steel angle. Bottom bar astragal is optional. |
Guides |
N/A Fabricated from three structural steel angles, bolted together to form a guide channel and mounting sngle. Quick Release guide angles include curtain stops and bellmouths integral to guide. |
Headplates |
N/A Headplates for mounting curtain, hood and barrel assemblies fabricated from steel plate. Drive side of the door axle provided with self-aligning precision bearing . |
Barrel Assembly |
N/A Barrel constructed from minimum 4-1/2 inch O.D. steel pipe. Deflection under full load not to exceed 0.03 inches per foot of span. barrel provided with threaded lugs welded to barrel assembly for curtain attachment. |
Springs |
N/A Spring assembly fabricated with precision ball bearings supporting tension shaft assembly. Curtain weight counter balanced by oil-tempered, helically wound torsion springs, grease packed and mounted on steel torsion shaft. Springs designed to provide 10, |
Hood |
N/A Hood fabricated from 24-gauged steel sheet, shaped to fit within headplates. |
Locking |
N/A Plated slide locks furnished for manual push-up operation, Chain hoist operated doors provided with chain keeper having provision for padlock. |
Operation |
N/A Manual push up, chain hoist, or motor operation |
Finishes |
N/A Curtain slats and hood hot-dipped galvanized, per ASTM A-653, G-60, with baked epoxy primer and polyester finish coat in gray and white. Guides and headplate shop painted black. Powder-coating optional. Bottom bars to be shop painted or galvanized. |
Windload |
N/A Provide doors designed to withstand minimum 20 pounds per square foot of windload. |