The 521 Series is a sectional aluminum door appropriate for environments where maximum light infiltration and/or visual access is required. Designed to fit openings up to 26'2" (7976 mm) wide and 20'1" (6121mm) high, the 521 Series features a wide, 2-11/16" (68mm) center stile, 3-3/4" (95mm) or 4-1/2" (114mm) bottom rail, based on door size.
Nominal Thickness - 1 3/4" (45 mm)
Maximum Standard Width - 26'2" (7976 mm)
Maximum Standard Height - 20'1" (6121 mm)
Material - 6063-T6 Aluminum
Standard Finish - 204R-1 Clear Anodized (Painted White at No Charge)
Center Stile Width - 2 11/16" (68 mm)
End Stile Width - 3 5/16" (85 mm)
Top Rail Width - 2 3/8" (60 mm) or 3 3/4" (95 mm)
Top Intermediate Rail Width - 2 1/8" (54 mm)
Bottom Intermediate Rail When - 1 19/32" (40 mm)
Bottom Rail Width - 3 3/4" (95 mm) or 4 1/2" (114 mm)
Weatherseals - Bottom, Flexible PVC
Standard Springs - 10,000 Cycle
Track - 2" (51 mm)
Mounting - Angle
Operation - Manual Pull Rope
Hinges and Fixtures - Galvanized Steel
Lock - Galvanized, Interior-Mounted Single Unit
1.01 Work Included
The doors will be 521 Series as manufactured by Overhead Door Corporation.
1.02 Related Work
Opening preparation, miscellaneous or structural metal work, access panels, finish or field painting, field electrical wiring, wire, conduit, fuses and disconnect switches are in the Scope of Work of other divisions or trades.
1.03 Quality Assurance
In accordance with accepted quality assurance guidelines for motor-operated doors, both the door and electric operator (optional) shall be manufactured by a single-source producer of door systems; as by Overhead Door Corporation.
2.01 Sections
Section will be comprised of 204R-1 clear (bronze, painted white or powder coated optional) rails and stiles extruded from 6063-T6 aluminum to produce a door panel thickness of 1-3/4" (45 mm). Center stiles will be 2.712" (69 mm). End stiles will be 3.35" (85 mm). Top rails will be 2-3/8" (60 mm) or 3-3/4" (95 mm). Intermediate rails will be 3 23/32 (94 mm). Bottom rails will be 3-3/4" (95 mm) or 4-1/2" (114 mm). All stiles and rails will be secured with 1/4" (6 mm) diameter through-rods. Panels will be anodized .050" (1 mm) aluminum held in place with aluminum moulding.
2.02 Glazing
Glazing will be (1/8" (3 mm) DSB), (1/8" (3 mm) or 1/4" (6 mm) plexiglass), (1/8" (3 mm) or 1/4" (6 mm) tempered), (1/8" (3 mm) or 1/4" (6 mm) clear lexan), (1/4" (6 mm) wire glass), (1/2" (12 mm) insulated glass). Verify 1/4" (6 mm) and 1/2" (12 mm) special glazing requirements with factory.
2.03 Springs
Standard springs will be 10,000 cycles. (Optional higher-cycle 25,000, 50,000, 75,000, or 100,000-cycle springs).
2.04 Hardware
Hinges and fixtures will be galvanized steel. Full-floating ball-bearing rollers will have hardened steel races. Roller sizes will be adequate for design requirements and limitations.
2.05 Track
Track is 2" (51 mm) standard (3" (76 mm) optional) angle-mounted. (Bracket-mounted track is an option, but not available on full vertical doors).
2.06 Lock
Lock will be interior-mounted galvanized single unit inside mechanism, installed for right-hand (left-hand) operation.
2.07 Weatherstrip
Bottom weatherstrip will be flexible PVC.
2.08 Finish
Finish will be clear anodized. (Optional bronze anodized) (Optional powder coat paint selected from manufacturer's colors).
2.09 Operation
Operation will be by manual pull rope. (Optional chain hoist and electric operator are available.)
3.01 Execution
Install the doors in accordance with Overhead Door Corporation instructions and standards, using an authorized Overhead Door Corporation distributor.
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