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.
20′ (6096 mm)
9’0″ (2743 mm)
Interlocking flat profile slats (F-158) with endlocks; Aluminum
Stainless Steel
No. 4 brushed steel
Steel plate to support curtain, counterbalance and hood
Extruded aluminum
Helical torsion springs housed in a steel tube or pipe barrel
Face of wall, between jambs
Interior slide bolt
Manual push up