1 // Introduction ENERGY AND ECONOMY EFFICIENT Speed gives you control over indoor climate with a faster closing time. It has tight seals for water tightness, wind load and air permeability. More regulation over temperature means less heat loss, less wasted energy, and lower CO2 emissions. See the economic and CO2 friendly benefit of NASSAU 5000 Speed OPENS 4 TIMES FASTER Developed for busy companies NASSAU 5000 Speed overhead sectional doors have been designed with a modified control system and reinforced construction to increase speed and benefit your business. Speed improves your working environment, increases safety, reduces energy expenses and more. The NASSAU 5000 Speed is engineered to let your business be busy. See how fast NASSAU 5000 Speed are compared to a NASSAU 9000F
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