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 26’11” (8204 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.

Category:

Features

Standard max width

26’11” (8204 mm)

Standard max height

20’1″ (6121 mm)

Panel 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

Door Options

  • 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

    insulation for aluminum door 521
  • 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

Read instructions on how to clean polycarbonate windows

Colors

Colors

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

color swatch – aluminum-color-chart

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