426 series

sectional-steel-door-426-600

​​​​​​​​​​​​​​Sectional steel door model 426​ is ideal for heavy-duty applications requiring protection against the elements. These doors feature a 2" (51 mm) panel thickness, 16-gauge steel intermediate and end stiles, ribbed steel exterior and 26-gauge steel back cover. Polystyrene insulation provides an R-value of 7.35. The Model 426 is a 24-gauge door available in sizes up to 28´2" (8585 mm) in width and 24´1" (7341 mm) in height and is offered in white or industrial brown. A multitude of options including reinforcing struts, movable center posts, and motor operation allow these insulated heavy-duty doors to be used in a variety of commercial and industrial environments.

Features

Standard max width 
28'2" (8585 mm)

Standard max height ​​ 
24'1" (7341 mm)

Warranty 
1 year limited

Nominal thickness 
2" (51 mm)

Insulation
Expanded polystyrene

R-value 
7.35 (1.29 W/Msq)

Exterior steel
24-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 (poly-bonded laminate, high impact polystyrene (HIPS) backed optional)

Standard mounting
Angle mount

Standard track 
2" (51 mm)

Standard springs
10,000 cycle

Weather Stripping 
Standard on bottom

Operation 
Manual pull rope

Finish 
White or Industrial Brown baked-on polyester

Lock
Interior mounted slide lock

Door Options
Documents