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Sectional Steel Doors 420

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.

Sectional Steel Doors

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Where to Buy

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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

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

Chain Hoist or Electric Operator is recommended for doors above 10’ tall or more than 400 pounds
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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