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10932 Longwoods Road, RR#1, Delaware, ON

519-652-8312 | 800-263-7010
Stewart Overhead Door Co. Ltd.



Commercial ST150 & ST175

Commercial ST150 & ST175

This high-grade commercial door is available in R14- T150 (1 1/2" thick) or R16-T175 (1 3/4" thick), steel front /steel back for superior strength and high strength to weight ratio for door applications up to 30' wide without a center post. Structured with 16 gauged galvanized steel end caps.

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Commercial ST150 & ST175 Exterior Designs.

  • Full View
    Full View
  • 24
    24" x 6" Lites
  • 24
    24" x 12" Lites
  • 34
    34" x 16" Lites

Commercial ST150 & ST175 Exterior Colours.

Colours may not be exact. Please contact your local dealer for colour chips.

  • Bronze* (T150 only)
    Bronze* (T150 only)
  • Charcoal (T150 only)
    Charcoal (T150 only)
  • Brown
  • White
  • Sandstone (T150 only)
    Sandstone (T150 only)

Commercial ST150 & ST175(Windows)

Product Details:

Built with 21” and 24” high panels, most sizes available in 3” increments up to 18’ high
Standard widths available up to 30” wide, custom cut or order to specific widths
16-gauge galvanized steel end caps and steel front /steel back for superior strength
Galvanized steel 2” & 3”
Section thickness
T150 (1 ½” thick) or R16-T175 (1 ¾” thick)
Surface Texture
Smooth ribbed exterior
Full view, 34x16, 24x12, 24x6 (insulated comes standard, non-insulated available)
Section Warranty
Limited lifetime for rust-through
One year



  • Maintenance free exterior
  • Smooth ribbed exterior look give the door the commercial appeal.
  • Four layer finish (high strength steel, rust resistant galvanized layer, epoxy primer, baked polyester paint finish)
  • Each panel is strong roll formed tongue and groove with meeting rails to seal out wind, rain, and snow
  • Tracks formed from strong galvanized steel
  • Longwearing steel rollers ensure smooth and continuous operation.
  • Artic Grade double-fin perimeter weather-strip helps reduce air infiltration and energy costs by sealing the exterior top and sides of the door when closed.
  • Bottom vinyl weather-seal running the length of the garage door helps protect your garage against the elements. (floor must be level)
  • Internal slide lock mechanism
  • Torsion spring standard
  • Complete Hardware set

Other Options:


  • Chain Hoist (wall mounted and shaft mounted)
  • Electrical Operators (trolley and wall mounted)
  • Pusher Springs
  • Bumper Springs
  • Operator prep and bracket
  • High moisture components (galvanized shaft, stainless steel cables, sealed rollers)
  • Combination PVC step plate and lift handle
  • Exhaust port - 4” diameter
  • Neoprene top weather seal

Stewart Overhead Door Co.
T150-T175 ST175 Polycarbonate 175

Commercial ST150 & ST175(Resources)