ThermoMark™ Model 5155 & 5255 Insulated Sectional Steel Doors

ThermoMark™ Models 5155 and 5255 insulated commercial sectional doors are extremely rugged and durable, with excellent thermal insulation qualities. For commercial projects that require a door with strength, insulation and an overall solid performance, these doors are the ideal choice.

Featuring CFC and HCFC-free polyurethane foam insulation, Models 5155 and 5255 are available with two different levels of thermal performance. The ThermoMark™ 5255 is rated with a U-value* of .0616 (R-value* of 16.22), while the ThermoMark™ 5155 has a U-value of .0825 (R-value* of 12.12).

The ThermoMark™ 5155 and 5255 both feature hot-dipped galvanized steel construction that is pre-painted prior to manufacturing with a two-coat system of polyester paint with a finished coat (includes primer). The inside and outside skins are roll-formed and separated with a thermal break to eliminate thermal conductance. Hinge locations have 20-gauge continuous back up plates for fastening. The bottom astragal is a two-piece bulb-type astragal to be attached to the interior skin. ThermoMark™ Models 5155 and 5255 section ends have end caps of 18-gauge hot-dipped galvanized steel, and a between-section joint seal is standard.

*Wayne Dalton uses a calculated door section R-value and U-value for insulated doors.

Features

• Max Width: 20’2” (5155) and 26'2" (5255)
• Max Height: 20’1”
• 27-gauge exterior steel
• Polyurethane insulation, R-value*=12.12 (5155) and 16.22 (5255)
• 1-3/8” (5155) and 1-7/8" (5255) section thickness
  
• Continuous steel strips for hinge attachment
• Stucco embossed exterior with pinstripes

*Wayne Dalton uses a calculated door section R-value for insulated doors.

The ThermoMark™ 5155 and 5255 meet IECC^® requirements for maximum U-factor of operable fenestrations (2015 Section C402.4) with a 3rd party certified tested value of less than 0.37. ThermoMark™ 5155 and 5255 also meet the ASHRAE 90.1 and IECC^® requirement for maximum air leakage for fenestration assemblies (2015 Section C402.5.2 Garage doors) with a 3rd party certified tested value of less than 0.40.

Door Options

Insulated Vision Lites allow for visibility while maintaining security. Full-view sections allow for maximum natural light and visibility

• Chain hoist operation
• Motor operation
• High cycle springs (25k, 50k, 100k)
• 3” track
• Solid shafts
• Perimeter weatherseal
• Broken cable devices
• Sensing edges
• Photo eyes
• Special track designs
• Mullions

Wayne Dalton’s optional Impact Section replaces the traditional bottom section on doors exposed to damage from forklifts and other warehouse traffic.

• Reduces downtime and costly repairs
• Impact-Resistant composite skinssurround an expanded polystyrene core
• Fully adaptable to multiple door thicknesses with hinge and section adapters to provide a superior fit
• Available for 21" and 24" sections
• Available from 8’2” to 16’2” wide in one-foot increments

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