Sectional steel doors with blue weather seals and numbered loading docks, showcasing heavy-duty design for commercial use.

Sectional steel door model 420 with ribbed exterior and windows, designed for commercial use, featuring yellow safety poles in front.

Sectional steel door model 420 in white finish with three windows, adjacent to a gray access door, set against a textured stone wall.

Sectional Steel Door Model 420

Model 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.

Overview
Documents

Construction

Product Specifications
Standard Max Width	31’2″ (9500 mm)
Standard Max Height	24’1″ (7341 mm)
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 or electric operator
Finish	White 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 420 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 Sectional Steel Door Model 420

The Sectional Steel Door Model 420 is designed with durability and functionality in mind. Its robust 20-gauge galvanized steel construction ensures that it can withstand the rigors of commercial use, making it an ideal choice for businesses looking for a reliable overhead door solution.

Additionally, the door features a nominal thickness of 2 inches, providing excellent insulation and security. The ribbed exterior surface not only enhances its aesthetic appeal but also contributes to the door's strength. With options for manual or electric operation, it offers flexibility to meet various operational needs.

Installation Options for Model 420

Proper installation is crucial for the optimal performance of the Sectional Steel Door Model 420. The door is designed for standard angle mount installation, which simplifies the setup process for contractors and ensures a secure fit. This adaptability allows it to be installed in various commercial settings, from warehouses to service stations.

Moreover, the door comes with standard track options that accommodate its maximum width and height, ensuring smooth operation. Professional installation services are recommended to guarantee compliance with safety standards and manufacturer specifications, providing peace of mind to business owners.

Maintenance Guidelines for Longevity

To ensure the longevity of the Sectional Steel Door Model 420, regular maintenance is essential. This includes routine inspections of the door's components, such as the springs and weather stripping, to identify any wear and tear that may affect performance. Keeping the door clean and free from debris will also help maintain its functionality.

Additionally, lubricating moving parts and checking the alignment of the door can prevent operational issues. Following the manufacturer's maintenance recommendations will not only extend the life of the door but also enhance its performance and reliability in demanding environments.

Comparative Advantages of Model 420

The Sectional Steel Door Model 420 stands out among competitors due to its combination of strength, customization options, and energy efficiency. Unlike many standard models, the 420 offers enhanced wind load capabilities, making it suitable for regions prone to severe weather conditions.

Furthermore, its customizable features, such as various finishes and sizes, allow businesses to select a door that aligns with their specific needs and branding. The door's energy-efficient design also helps reduce heating and cooling costs, providing long-term savings for commercial properties.