• A row of ten large white Model 422 sectional steel doors, each labeled with a red number from 1 to 10, lines the white industrial building against a clear blue sky.

Sectional Steel Door Model 422

Rolling Security Shutters

Model 422

Comprehensive line of sectional steel and insulated steel doors.

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Overview

Sectional Steel Door model 422 door 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 in a white finish. Polystyrene insulation provides an R-value of 7.35. The Model 422 is a 20-gauge steel door available in sizes up to 29´2″ in width and 24´1″ in height (8890 mm and 7341 mm). 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.

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Wide array of 
stained and painted finishes

A person sits cross-legged on the floor meditating, with hands resting on their knees. A large clock is behind them, symbolizing mindfulness and taking time to meditate. The background is blank.

Wood-grain
texture

A stick figure sitting at a desk raises its arms in frustration while looking at a computer monitor, with a slanted desk lamp overhead.

Customize with windows and hardware

A person in a wheelchair is depicted ascending a flight of stairs using a stair lift, illustrating accessibility solutions for individuals with mobility impairments.

Superior thermal performance

A black cat sits on a windowsill, looking outside. Sunlight streams through the window, casting a warm glow on the cat’s fur and the surrounding area. Lush green trees can be seen outside the window.

Superior 
durability

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Wind load options
upon request

Construction

Product Specifications

Insulation TypeExpanded polystyrene
R Value7.35 (1.29 W/Msq)
Material
Steel
Max Width
29’2″ (8890 mm)

Get inspired

Explore our photo galleries to get inspired for your new residential or commercial door.

SEE GALLERY
View through large windows of a fire station showing several red fire trucks parked in a well-lit garage, with equipment and tools visible in the background.
A modern building with large glass garage doors labeled SERVICE above the entrance, likely a service center or auto repair shop, with a paved sidewalk in front.
Interior of an industrial facility with metal tracks running down the center, surrounded by machinery, tools, and workbenches. A large yellow crane is mounted overhead, and the space is brightly lit with high ceilings.
A suburban house with a decorative double garage door, surrounded by landscaped bushes, colorful flowers, and trimmed shrubs. The driveway is paved, and the house features tan siding with brick accents.
A modern house exterior with stone walls, a wooden garage door featuring rectangular windows, a balcony with a metal railing, and stairs on either side leading to the entrance.
Modern house with stone and wood siding, large windows, two gray garage doors, and a spacious driveway under a partly cloudy sky.
Modern white two-story house with black-framed windows, wooden accents, and a metal roof. There is a three-car garage with glass doors and a landscaped front yard with small trees and bushes under a clear blue sky.
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