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.

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Options

Glass Options

Clear
Obscure
Satin
  • Electric operator or chain hoist
  • Bottom sensing edge
  • 3" track
  • Bracket mounting (not available on full vertical door tracks)
  • Exhaust ports
  • Polyurethane insulation available in the rails and stiles
    • R-value up to 4.1 depending on glazing choice
  • Higher-cycle springs in 25k, 50k, 75k, 100k cycle
  • Four-section pass door
  • Finish options:
    • Bronze anodized
    • Select from 197 standard powder coat colors or colored to match specification

Window Glazing Options:

  • 1⁄8" (3 mm) DSB
  • 1⁄8" (3 mm) or 1⁄4" (6 mm) acrylic
  • 1⁄8" (3 mm) or 1⁄4" (6 mm) tempered
  • 1⁄8" (3 mm) or 1⁄4" (6 mm) clear polycarbonate
  • 1/4" (6 mm) and 3/8" (10 mm) multi-wall polycarbonate
  • 1⁄4" (6 mm) wire glass
  • 1⁄2" (12 mm) insulated glass

Door Design

521 - 7ft.
521 - 8ft.

Colours

Anodized
Clear
Anodized
Bronze
Anodized
Black
Knotty Pine​​
Cherry
Dark Walnut
Cherry
with Flame

POWDER COAT

Select from 197 standard powder coat colors or colored to match specification.

Actual door color may vary from the digital representation shown here.

Color samples are available by request.

Features

Standard max width:

26'2" (7976 mm)

Standard max height:

20'1" (6121 mm)

Section thickness:

1 3/4" (45 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" (84 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 width:

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

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