Thermacore - KTIV News 4 Sioux City IA: News, Weather and Sports


Thermacore: For premium construction and maximum thermal efficiency, a Thermacore insulated steel door is the ideal choice. Most models feature our patented sandwich construction of steel-polyurethane-steel and between-sectioon seals with thermal breaks for reduced air infiltration. These doors will give you many years of reliable operation and will help keep your home comfortable in cold and hot climates.

Series Insulation R-Value Warranty
290 Polyurethane 9.31 20 yrs.*
190 Polyurethane 12.76 Lifetime*
490 Polyurethane 17.50 Lifetime*
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