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521 Series Doors
Model 521

Aluminum Glass Door model 521 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" (6121 mm) high, the Model 521 features a wide, 2-11/16" (68 mm) center stile, 3-3/4" (95 mm) or 4-1/2" (114 mm) bottom rail, based on door size.
Color Options
Anodized Finishes





Clear (Standard)
Light Bronze
Medium Bronze
Dark Bronze
Black
Power Coat Color Options
PowerGuard Premium powder coat options are available in approximately 200 colors as well as custom matching to specification.
Glass Options

Double Strength (DSB)

Gray Tint

Satin Etched

Obscure

Impact Frosted Polycarbonate

Green Tint

Bronze Tint
Construction
Standard Max Width: 26' 2"
Standard Max Height: 20' 1"
Panel Thickness: 1-3/4"
Lock: Galvanized, Interior-Mounted Single Unit
Material: 6063-T6 Aluminum
Standard Finish: 204R-1 Clear Anodized
Weather Seals: Bottom, Flexible PVC
Hinges & Fixtures: Galvanized Steel
Center Stile Width: 2-11/16"
End Stile Width: 3-5/16"
Top Rail Width: 2-3/8"
Top Int. Rail Width: 2-1/8"
Bottom Int. Rail Width: 1-19/32"
Bottom Rail Width: 3-3/4"
Options
Bottom Sensing Edge
Chain Hoist or Electric Operator
3" Track
Bracket Mounting
High Cycle Springs
Exhaust Ports
Polyurathane Insulation Available in the Rails & Stiles. R Value up to 4.1 Depending on Glazing Choice
Finish Options:
*Bronze Anodized
*Select from 197 standard powder coat colors or colored to match specification
Window Glazing Options:
* 1/8" DSB
* 1/8" or 1/4" Acrylic
* 1/8" or 1/4" Tempered
* 1/8" or 1/4" Clear Polycarbonate
* 1/4" and 3/8" Multi-Wall Polycarbonate
* 1/4" Wire Glass
* 1/2" Insulated Glass
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