Track
50mm (2″) or 75mm (3″) Z275 (G90) galvanized steel. Material thickness 1.9mm (0.075″) for 50mm track and 2.7mm (0.105″) for 75mm track. Vertical tracks to have a graduated slope. Vertical tracks to be bracket mounted 2.7mm (0.104″) or continuous angle mounted 2.4mm (0.093″) and fully adjustable. (Note: reversed angle / 1.0″ overlap not available). Horizontal track to be adequately reinforced per door size and weight.
Door Face Hardware
Graduated end hinges and centre hinges Z275 (G90) galvanized steel. Heavy duty rollers with hardened inner and outer races with 10 grade 500 ball bearings.
Strutting
Integral 38mm (1-1/2″) deep strut on each top rail.
Counterbalance System
Class II Oil Tempered ASTMA229 wire minimum 10,000 cycle torsion springs on continuous steel shaft (solid or tubular shaft as required by size and operation). Aircraft quality galvanized lift cables with a minimum safety factor of 5 to 1.
Locking
Interior mounted slide lock suitable for pad locking.
Bottom Weatherstrip
U type arctic grade vinyl fits into integral bottom retainer.
Section Interface Weatherstrip
Artic grade vinyl bubble shapped weatherstrip at all section meeting rails in integral retainer.
Jamb Mounted Weatherstrip
Anodized or painted aluminum with two point flexible arctic grade vinyl weatherstrip.
Header Mounted Weatherstrip
Anodized or painted aluminum with two point flexible arctic grade vinyl weatherstrip.
Operation
Manual-Standard.
Optional: Hand chain hoist (3-1 ratio) or optional electric operator.
Available Sizes
Widths to 6150mm (20’2″) and heights to 5540mm (18’0″)