The ThermoMark 5200 doors combine strength, insulation and aesthetic appeal for applications that require all three features. Made of hot-dipped galvanized steel, they are designed with a wood grain finish in either a raised panel, Sonoma panel, or flush profile in a variety of colors. Foamed-in-place polyurethane insulation helps improve the thermal efficiency of a building, offering year-round comfort while also helping to provide quieter door operation.

Insulated Sectional Steel Doors Deliver Thermal Efficiency
Insulated Steel Doors



Features 5200
Polyurethane Insulation Yes
Insulation R-value* 16.12
Construction 3 Layer
(Steel/Insulation/Steel) 1 7/8″ Steel Panels
Tongue & Groove Section Yes
Joints to Seal out Weather Yes
Thermal Break Yes
10 Year Limited Warranty Yes



Materials & Construction

The ThermoMark 5200 is manufactured using our patented, continuous foamed-in-place technology, in which the polyurethane core is securely bonded to hot-dipped galvanized inner and outer skins. This process gives the ThermoMark 5200 outstanding thermal, strength, and bonding characteristics while creating a door that is significantly more efficient than conventional insulated steel doors. A designed-in joint seal also helps save energy by preventing air filtration.

The ThermoMark 5200 is designed for easy installation, rugged durability and longer life. Features such as the 18-gauge steel end caps give the ThermoMark 5200 increased rigidity, while the factory finished interior and exterior hot-dipped, galvanized skins make installation easier, add life to the door and provide greater durability. The ThermoMark 5200 also features hardware plates at all fastener points to add durability and extend the life of the door.

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