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​​​Architect Resource Center​

Model C-20

Sectional Steel Doors

Model C-20 is a durable, visually appealing door for moderate to heavy-duty commercial applications. Its unique 2”x3” box-stile design and tongue-and-groove construction adds vertical stability and strength.

  • Max Width: 28’2”
  • Max Height: 22’1”
  • 20-gauge steel
  • Optional polystyrene insulation, R-value* = 7.64
  • 10,000 cycle standard spring
  • Tongue-and-groove joint profile

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