Insulated Flood Only Model # 1540-520 is also certified to mitigate floodwater, but is insulated to protect pipes from freezing temperatures. This model would be used in a conditioned space, a garage, vestibule, or office, where ventilation is not required.The Overhead Door Model # 1540-530 is designed to install into a garage door. It can be supplied in the Insulated Flood Only or Duel Function model. This unit would be used if there is no room for vents on an exterior wall. Sizes include 8″ x 16″ covering 200 Sq/Ft per unit and 16″ x 16″ that covers 400 Sq/Ft per unit.

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