Key Product 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” section thickness (5155) and 1-7/8" (5255)
- Continuous steel strips for hinge attachment
- Stucco embossed exterior with pinstripes
*Wayne Dalton uses a calculated door section R-value for insulated doors.
Model Comparison Chart
Stucco steel back panels for aesthetics and easy cleaning
Hot-dipped, galvanized steel wrap-around end caps add strength, rigidity and long life
CFC- and HCFC-free polyurethane foamed-in-place insulation
Sound absorbing insulation makes door quieter in operation; reduces wind rattling
Two-coat, baked-on polyester finish makes surface virtually maintenance free
Bulb-shaped bottom seal remains flexible even in extreme cold to help keep the bad weather outside.
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.