Thermacore® Sectional Steel Doors 599

​​​​​​​​​​​​​​​​​​With an R-value of 17.5 (3.09 W/m2) a U-value of .057 (.324 m2/W), and one of the best overall air infiltration ratings in the industry, the Thermacore® Sectional Steel Door Model 599 is one of the most thermally efficient door systems in its class. The Model  599 doors also carry a Class 26 sound transmission rating for applications where sound suppression is desirable.​

The Thermacore® line features steel-polyurethane-steel panel construction which provides a thermal barrier that withstands extremely hot or cold climates and the most demanding environmental requirements.