Advanced Insulated Sectional Doors

Model 850

The Thermacore® AP Model 850 is engineered to deliver advanced performance in commercial and industrial applications where climate control, durability and ease of maintenance are primary concerns.

The Thermacore® AP door system's advanced performance answers the demand for more reliability, durability, design flexibility and thermal efficiency.

This door system presents the most advanced thermal performance values published by any major US manufacturer of 3" commercial insulated sectional doors with an R-value* of 26, U-value** of .038 and a tested installed U-factor† of .14.

Standard max width: 40'2" (12,243 mm)

Standard max height: 24'1" (7317 mm)

Panel thickness: 3" (76.2 mm)

R-value: 26 (4.58 Msq/W)

U-value: 0.038 (.22 W/Msq)

Installed U-Factor: .14 Btu/hr x ft² x Fº (.80 W/Msq)

Air infiltration: At 15 mph (24 kmph) .09 cfm/ft² (1.65 m³/hr/m²)

Thermal break: 1-3/4" wide PVC thermal break; PVC thermal break on end stiles


  • 10 year limited delamination
  • 1 year material and workmanship
  • 3 year/20,000 cycle door and operator system (material and workmanship)




Winnipeg Location

Overhead Door of Winnipeg Ltd.
470 Des Meurons Street
Winnipeg, MB R2H 2P4

Toll Free: (800) 661-8991
Sales: (204) 233-8621
Service: (204) 233-7167
Fax: (204) 233-2611

Brandon Location

Overhead Door of Brandon Ltd.
Southview Industrial Park
17th Street East & Patricia Avenue
Building #7
Brandon, MB R7A 5Y4

Sales: (204)725-0540
Fax: (204)726-0491

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