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​​​Architect Resource Center​

Model 5155-5255

Sectional Steel Doors

ThermoMark™ Models 5155 and 5255 combine strength, insulation, and aesthetic appeal. Made of hot-dipped galvanized steel, it is designed with a stucco finish and flush profile design.

  • Polyurethane insulation, R-values* = 12.12 (5155 and 16.22 (5255)
  • Max width: 26’2”
  • 1-3/8” section thickness (5155) and 1-7/8" (5255) section thickness
  • Continuous steel strips for hinge attachment and ability to cut down and inventory sections
  • Stucco embossed exterior with pinstripes available in white, almond, taupe and brown; also available with TruChoice™ Color System

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