产品描述

Mounted in the air inlet to the inside of the cooling pad, in the cold season off to insulate, in vertical ventilation season to adjust the opening size and fresh air inlet flow.

●three tier sandwich insulation panels to prevent energy loss ;
●continuous EPDM foam seal to resist harmful wind and prevent leakage;
●Completely closed during the winter, insulation performance is five times more than normal curtain ;


●With sufficient stiffener to prevent bending, deformation and not sealed lightly;
●Each rib with adjustable arm garbage ,save your force to adjust clamping force ;
●Eliminate the dead angle of inlet of cooling pad when tunnel ventilation ;
●Eliminate a large area ventilation dead angle on both sides of the well when tunnel ventilation ;
●Control airflow direction, screwed air better mixing with the air ;
●The frame is hot galvanized or Matte anodized aluminum alloy