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Model 521

Aluminum Glass Doors | Commercial Products

​​​​​​​​​​​Aluminum Glass Door model 521 is a sectional aluminum door a​ppropriate 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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Salinas, CA
(831) 422-3667
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​​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
  • Higher-cycle springs in 25k, 50k, 75k, 100k cycle
  • Four-section pass door
  • Wind load options available
  • 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

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

garage door color options

​​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 ​