Overhead Door- Thermacore 591 Insulated Sectional Door in Miami, Florida

The commercial door market is fast-changing and provides various product choices to meet different business industry door needs.

Business owners with limited space are looking for doors that maximize their commercial area and meets their budget.

Sectional doors are ideal for a commercial establishment with small and tight spaces because of its upwards opening. It comes with an insulated feature to keep the temperature inside of your commercial facility stable. Insulated sectional doors benefit business owners to save on electric bills and reduce energy waste.

Overhead Door- Thermacore 591 Insulated Sectional Door offers heavy-duty performance and thermally efficient door for a wide range of opening sizes for warehouse and industrial applications.

The 591 Series exterior coating is constructed of galvanized steel with a ribbed and textured finish. It is available with a white interior finish and choice of white, industrial brown, tan or gray exterior.

Overhead Door- Thermacore 591 Insulated Sectional Door

Design Highlights:

  • Standard Max Width: 35’2″ (10,719 Mm)
  • Standard Max Height: 24’1″ (7,341 Mm)
  • Panel Thickness: 1 5/8″ (41 Mm)
  • R-Value: 14.86 (2.63 W/Msq)
  • U-Value: .067 (.38 Msq/W)
  • Air Infiltration:
    • At 15 Mph (24 Kmph) .08 Cfm (2.26 Lmp)
    • At 25 Mph (40 Kmph) .08 Cfm (2.26 Lmp)
  • Thermal Break: PVC
  • Exterior Steel: .015″ (.38 Mm) Galv.
  • Exterior Surface: Ribbed, Textured
  • Standard Springs: 10,000 Cycle
  • Wind Load: Meets ANSI/Dasma 102-1996
  • Warranty:
    • 10 Year Limited Delamination
    • 1 Year Limited on Door
    • 3 Year/20,000 Cycle Limited on Door & Operator System
    • 20 Year Limited on Kynar Premium Finish Option


  • Highly Engineered for High Thermal Efficiency.

The Thermacore® product line’s unique manufacturing process provides a CFC-free, fully encapsulated, foamed-in-place panel which maintains R-value performance year-round – and year in and year out.

  • Strong, Lightweight, Attractive, and Durable.

Thermacore® 591 doors feature roll-formed, hot-dipped galvanized steel exterior panels designed for exceptional strength and sound suppression capabilities.

  • Superior Field Serviceability.

Thermacore® has a special internal construction that allows hinges to be placed anywhere along the panel’s length permitting customization on the job site — for fast and precise installation, repair, or retrofit.

  • Built with the Best Technology in the Business. 

The 591 is manufactured using Overhead Door Corporation’s proprietary, computer-controlled fabrication process.

Overhead Door Company of South Florida, a division of DuraServ, has been in the commercial door and loading dock industry for years and committed “to be the most trusted sales and service distributor in our market”. 

We offer Overhead Door- Thermacore 591 Insulated Sectional Door model steel-polyurethane-steel panel construction provides a thermal barrier that withstands extreme climatic conditions and the most demanding environmental requirements.

Overhead Door Company of South Florida leads you from design, sales, installation, and service of the safest and efficient commercial doors and loading dock system in South Florida – Miami, Miramar, West Palm, Broward, Dade, Monroe County, Fort Lauderdale, Deerfield Beach, and Doral. We have the products and skilled technicians to keep your doors and dock operational all the time. Our fleet of well-trained technicians and stocked trucks are ready to fix anything that might get broken.

Contact us at (954) 266-7960 for a new insulated sectional door for your commercial building or a service request.

Why an Overhead Door- Model 420 Steel Sectional Door Suitable for Heavy Industrial Operations in Miami, Florida?

An overhead door is an essential structure in every business warehouse or facility. Its significant importance is a big factor in the success of any loading dock business, especially for heavy industrial applications.   

 If you’re looking for the best overhead door, Overhead Door Model 420 Steel Sectional Dooris the one for you.  

Overhead Door Company of South Florida, a division of DuraServ Corp, is Miami’scommercial door and operator provider for industrial applications. As an Overhead Door company, we have access to the full line of Overhead commercial door products from rolling grilles to high-speed doors to insulated sectional doors. We have the right product to fulfill your needs. 

And when it comes to sectional doors Overhead Door Company of South Florida is second to none, offers its product model Overhead Door Model 420 Steel Sectional Door. Here are some of its amazing features:

Overhead Door- Model 420 Steel Sectional Door

Specification Key Highlights:

  • Construction (Standard): Max Width-31’2″ (9500 mm)/ Max Height-24’1″ (7341 mm)
  • Thickness (Nominal):2″ (51 mm)
  • Back Cover: 26-Gauge Galvanized Steel
  • Mounting (Standard): Angle Mount
  • Track (Standard): 2″ (51 mm)
  • Springs (Standard): 10,000 Cycle
  • Stiles: Center/End-16-Gauge Steel
  • Exterior Steel:20-Gauge Galvanized Steel/Exterior Surface-Ribbed
  • Weatherstripping: PVC (Flexible)Bottom with Retainer
  • Color (Interior): White/ Finish: White Baked On-Polyester
  • Warranty: 1 Year Limited

Overhead Door’s Model 420 Steel Sectional Dooror Model 420is a commercial sectional door that features a 2″ (51 mm) panel thickness, 16-gauge steel intermediate, and end stiles, ribbed steel exterior, and a white paint finish.  

This 420 Series is a 20-gauge OverheadDoor Sectional Door and steel door available in sizes up to 31´2″ in width and 24´1″ in height (9500 mm and 7341 mm). 

Several options include weather stripping, reinforced struts, movable center posts, and motor operation that are suitable and allowing heavy-duty doors to meet nearly any project requirements. 

These sectional doorsconvene excellent durability on its panel with precision-engineered galvanized hinges, fixtures, and is guaranteed to be heavy-duty. It also has a 2” (51 mm) track to qualify rigorous building codes and wind loading essentials.   

The doors’ rabbeted gathering rails improve auxiliary inflexibility along the full width of the entryway and structure, making strong anti-weather protection. A prepared on polyester paint finish dispenses with field painting included assurance against the weather elements.

There are more alternatives for more flexible usefulness, a not insignificant rundown of choices extends the adaptability of the Overhead Door Model 420 Steel Sectional Door to meet most any business venture prerequisites.  


  • Built to Perform and Last
  • More Options for Versatile Functionality
  • High-Usage Package for Demanding Conditions
  • Knock & Lock™ Breakaway Door System 

From helping you design the safest most efficient dock design to servicing your current dock equipment and doorsOverhead Door Company of South Florida has the products and skilled technicians to keep your dock running at its peak. Our fleet of well-trained technicians and stocked trucks are prepared to fix anything that might get broken. 

To know more about Overhead Door Model 420 Steel Sectional Door or any commercial sectional doors in Miami, please feel free to contact us at (954) 266-7960. 

You can make a service request, or we can visit personally our service areas: South Florida including West Palm, Broward, Miami-Dade, and Monroe Counties.