Sectional Steel Door Model 418 Model 418

Sectional Steel Door Model 418 Model 418

When your project requires a solid sectional steel door system that will hold up to heavy use, rough handling and extreme conditions look to Overhead Door™ 418 to pack an extra measure of toughness. Fabricated of 16-gauge, flush galvanized steel exterior and 26-gauge steel back cover, these 2" (51 mm) thick doors offer an R-value of 7.35 (1.29 W/m2). A wide array of options allow these doors to meet the most stringent project requirements that call for a degree of thermal efficiency.


Product Specifications 
Standard Max Width30'2" (9144 mm)
Standard Max Height21'1" (6426 mm)
InsulationExpanded polystyrene
R-value7.35 (1.29 W/m2)
Exterior steel16-gauge galvanized steel
Exterior surfaceFlush
FinishWhite baked on-polyester
End stiles16-gauge steel
Wind LoadFBC approved wind load options available
Center stiles16-gauge steel
Back cover26-gauge galvanized steel
Interior colorWhite
Standard mountingAngle mount
Standard track2" (51 mm)
Standard springs10,000 cycle
Weather StrippingStandard on bottom
OperationManual pull rope or electric operator
LockInterior mounted slide lock


  • 1-year limited

When your project requires a solid sectional steel door system that will hold up to heavy use, rough handling and extreme conditions look to Overhead Door Corporation's 418 to pack an extra measure of toughness. Fabricated of 16 or 20-gauge galvanized steel for strength and durability these doors feature an attractive flush exterior finish as well as a tough 26-gauge back cover for rugged good looks in any environment. The doors’ many available options allow customization to your specific application and aesthetic requirements.

Our model 418 insulated sectional steel doors are built for exceptional strength and maximum life. The doors feature heavy gauge, hot-dipped galvanized steel exteriors, and 16-gauge steel center and end stiles. Superior panel strength and a heavy-duty, tight-fitting 2” (51 mm) track combine to meet local windloading requirements. Rabbeted meeting rails ensure weathertight joints and provide full-width interlocking structural rigidity. Precision-manufactured galvanized steel track, hinges and fixtures ensure long life and low maintenance. A baked-on polyester paint finish eliminates job-site painting and provides added protection against the elements.

These sectional steel doors offer the benefit of insulation for applications where enhanced thermal efficiency is desired. The standard expanded polystyrene provides R-values of 7.35 (1.29 W/m2). These sectional doors also feature a back cover of 26-gauge galvanized steel for added protection against thermal transfer.

These sectional steel doors offer plenty of options to meet your aesthetic and functional requirements. You’ll have the choice of full-sash section or individual-panel glazing to control the amount of light infiltration and permit visitor identification. Bracket mounting is available (except on full vertical doors). A variety of bottom strips and jamb weatherseals minimize air infiltration and accommodate any number of field conditions, including sloping grades.

These sectional steel doors offer an optional package that improves door performance and durability for doors with high-usage cycles. This special application package has three key components for added strength and durability: high-cycle torsion springs in 25K, 50K, 75K or 100K cycles, a solid-steel shaft to reduce fatigue and deflection, and a heavy-duty 3” track. Also available is an integrated line of electric operators designed specifically for these heavy-duty doors, which enhances reliable performance for years to come.

  • white color swatch


  • Chain Hoist or Electric Operator is recommended for doors above 10' tall or more than 400 pounds
  • Bottom sensing edge
  • Full sash section with 1/8" (3 mm) DSB, insulated; 1/8" (3 mm) and 1/4" (6 mm) acrylic
  • Individual lites with 1/2" (13 mm) DSB
  • 3" (76 mm) track
  • Bracket mounting (not available on full vertical door tracks)
  • Higher-cycle springs in 25k, 50k, 75k, 100k cycles
  • Exhaust ports
  • Jamb weather seals
  • Bottom strips; including: looped PVC weatherstrips, flexible PVC astragal weatherstrips, and double-contact weatherstrips
  • Reinforcing struts of roll-formed, galvanized steel
  • Movable center posts for 2" (51 mm) or 3" (76 mm) tracks that roll away, with automatic safety catches that prevent door closure when posts are removed
  • Tumbler keyed lock
  • Window Glazing Options
  • Impact Section Available
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