Sectional Steel Door Model 426 installation with multiple white doors, yellow safety posts, and a service vehicle in a commercial setting.

Sectional steel doors with numbered panels, showcasing heavy-duty design suitable for commercial applications, against a clear blue sky.

Interior view of a commercial space featuring multiple Sectional Steel Doors Model 426, showcasing their ribbed steel design and window inserts, ideal for heavy-duty applications.

Sectional Steel Door Model 426

Model 426

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.

Overview
Documents

Construction

Product Specifications
Standard Max Width	28’2″ (8585 mm)
Standard Max Height	24’1″ (7341 mm)
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 or electric operator
Finish	White or Industrial Brown baked-on polyester
Lock	Interior mounted slide lock
Wind Load	FBC approved wind load options available

Warranty

1-year limited

BIM

Sectional Steel Doors Model 426 BIM (opens in a new window)

Shop Drawing

Specifications

Product Literature

2465 N Miami Ave, Fresno, CA 93727, United States

Business Hours

Monday-Friday: 7:00 AM – 4:30 PM
Saturday-Sunday: Closed

CA Contractors License #474830

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Features of the Model 426

The Sectional Steel Door Model 426 boasts a variety of features designed to enhance durability and functionality. Constructed from high-quality 24-gauge galvanized steel, this door is built to withstand the rigors of daily use while providing excellent insulation with an R-value of 7.35.

Additionally, the door is available in two attractive finishes—white and industrial brown—allowing it to complement various architectural styles. Its standard features include a manual pull rope operation and an optional electric operator, catering to different user preferences for convenience and ease of use.

Installation Process

Installing the Sectional Steel Door Model 426 is a straightforward process that can be handled by professionals or experienced DIY enthusiasts. The door comes with a comprehensive installation guide that outlines each step, ensuring a seamless setup.

For optimal performance, it is recommended that installation be carried out by certified technicians who can ensure that the door is mounted correctly and operates smoothly. This not only enhances the door's longevity but also ensures compliance with safety standards.

Maintenance Tips

Regular maintenance is essential to keep the Sectional Steel Door Model 426 in peak condition. Simple tasks such as lubricating moving parts, inspecting weather stripping, and checking the door's alignment can significantly extend its lifespan and performance.

Homeowners should also schedule professional inspections annually to address any potential issues before they escalate. This proactive approach helps maintain the door's functionality and ensures it remains a reliable entry point for years to come.

Customer Testimonials

Customers have praised the Sectional Steel Door Model 426 for its robust construction and aesthetic appeal. Many users report satisfaction with its performance, noting that it effectively enhances the security and energy efficiency of their homes.

Feedback often highlights the door's ease of use and the professional installation services provided by Overhead Door Company of Fresno, which contribute to a positive overall experience. These testimonials reflect the brand's commitment to quality and customer satisfaction.