Therm O Dor

Therm-O-Dor polyurethane insulated steel doors have a reputation as a premium quality product providing strength, durability, and an exceptional long life.

There are many different styles and types to choose from. With R-value up to R-16.04.

Therm-O-Dor Insulated Doors is the industry’s premier insulated sectional door and the ideal choice in applications where thermal efficiency, air infiltration and strength are paramount. Outstanding air infiltration ratings are achieved through superior engineering and construction. Other energy efficient features include bottom seals, between section seals, & thermal breaks to prevent heat or cold conductivity.


  • Thermal Glazing
  • Four-section pedestrian pass door
  • High-usage package
  • Steel/vinyl jamb weatherstrip
  • Electric operator or chain hoist
  • Combination PVC step plate and life handle
  • Safety bottom fixture
  • Bottom sensing edge
  • Movable center posts
  • Header seal flap
  • Aluminum sash section available to 20’ 2″ wide
  • Five-pin tumbler keyed lock
  • Exhaust ports
  • High life and full vertical lift
  • Low headroom package
  • High cycle springs
  • Special colors


SecurityTechnology Advanced ConstructionEnergy SavingDurabilityVirtually Maintenance Free

The Therm-O-Dor offers excellent protection against break-ins. The security is provided by a tough section made up of a core of polyurethane covered with two steel skins. The sections are held together with heavy-duty hardware and sturdy interior side locks to ensure maximum security.

All aluminum doors are manufactured with a high-quality aluminum alloy. Doors are assembled to ensure safe and continuous operation for years to come. The highly versatile line also features the widest selection of doors available on the market today.

  • Thickness: 1 3/4 (44mm)
  • Standard clear anodized finish
  • Ultra stable self-locking screw-mounted assembly
  • Meeting rails with integrated struts for doors 14′ wide and over. T-shaped aluminum struts are added to doors 18′ wide and over.
Therm-O-Dor features an exclusive, patented mechanical interlock which is incorporated in the panel design that locks together the exterior and interior steel skins. This feature is only available with the Therm-O-Dor product.
Air infiltration and conductive energy loss is minimized with intermediate between section joint seals: top, bottom and side double flap weather seals and a Therm-O-Break between the interior and exterior steel surfaces.
Unequalled adhesion of the steel skins to the polyurethane core offers increased strength and is backed by our 7-year warranty against delamination. The steel interior and exterior skins are galvanized to prevent rust.
The sections are finished with a two coat baked on polyester paint finish providing long-term resistance to fading and corrosion.