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Sectional Steel Doors 420

sectional doors used on building
​​​​​​​​​Sectional steel door model 420​ is designed for heavy-duty use in a variety of commercial and industrial applications. The Model 420 door features a 2" (51 mm) panel thickness, 16-gauge steel intermediate and end stiles, ribbed steel exterior and a white paint finish. This 20-gauge steel door is available in sizes up to 31´2" (9500 mm) in width and 24´1" (7341 mm) in height. Numerous options including weatherstripping, reinforced struts, movable center posts, and motor operation allow these heavy-duty doors to meet nearly any project requirements.
Features
​​​Features

Standard max width
31'2" (9500 mm)

Standard max height
24'1" (7341 mm)

Warranty
1 year limited

Nominal thickness
2" (51 mm)

Exterior steel
20-gauge galvanized steel

Exterior surface
Ribbed

End stiles
16-gauge steel

Center stiles
16-gauge steel

Interior color
White

Back cover
26-gauge galvanized steel

Standard mounting
Angle mount

Standard track
2" (51 mm)​

Standard springs
10,000 cycle

Weather Stripping
Flexible PVC bottom with retainer

Operation
Manual pull rope

Finish
White baked on-polyester

Lock
Interior mounted slide lock ​​​​

Door Options
​​Door Options
  • Electric operator or chain hoist ​
  • Bottom sensing edge ​​
  • Full sash section with 1/8" (3 mm) DSB, insulated; 1/8" (3 mm) and 1/4" (6 mm) acrylic ​
  • Individual lites with 1/8" (3 mm) DSB; 1/8" (3 mm) and 1/4" (6 mm) acrylic; 1/8" (3 mm) and 1/4" (6 mm) polycarbonate; 1/8" (3 mm) and 1/4" (6 mm) tempered; 1/4" (6 mm) wired ​
  • 3" (76 mm) track ​
  • Bracket mounting (not available on full vertical door tracks) ​
  • Higher-cycle springs in 25k, 50k, 75k, 100k cycles ​
  • Exhaust ports ​
  • Jamb weather seals ​
  • Bottom strips; including: looped PVC weatherstrips, flexible PVC astragal weatherstrips, and double-contact weatherstrips ​
  • Reinforcing struts of roll-formed, galvanized steel ​
  • Movable center posts for 2" (51 mm) or 3" (76 mm) tracks that roll away, with automatic safety catches that prevent door closure when posts are removed ​
  • Tumbler keyed lock ​
  • Window Glazing Options​ ​​
  • Impact Section Available
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