Urethane Panel Sections
The 1-5/8″ thick door panel made of hot-dipped galvanized steel, provides a durable and lasting surface. A urethane core with an R-value of 13.6 and U-value < 0.5 (U-value of core and steel skin) provides optimum insulation, reduces loss of conditioned air and contributes to energy savings. Synthetic panel connectors provide an extremely smooth and quiet door operation.
Built-in Light Grid
The standard light grid is integral with the guide tracks making it less susceptible to damage by passing loads. This system enhances protection of personnel and goods and drastically reduces the likelihood of damage and repair to other parts of the door, saving on maintenance costs.
Exclusive Duratec® Insulated Windows
The Duratec®insulated windows are coated with a special finish which prevents marks and scratches caused by cleaning, and retain clear view after many cleanings. The synthetic double panes provide good thermal insulation while being fully transparent. The Speed-Guardian™ 4000 U door is available with a complete vision panel, designed for the pleasing aesthetic appeal some applications require.