The one way rectangular damper’s housing is made of galvanized steel, it has flanged joint of 20 mm or 30 mm thickness. On the inside, gravitational shutters made of aluminum, normally closed, prevent air entrance from the outside and loss of heat. The unit should be installed only in a vertical position and has flanged joints at both ends.
DRL - Regulating damper
DSL - Shut-off damper SPIRO
DSL - Shut-off damper
IRIS - Regulating damper IRIS
RCRF - Regulating damper
DRL - Regulating damper SPIRO
RSK - One way circular damper
RCRF RF - Regulating damper - pressurization, smoke ventilation, compensation
VD - Rectangular register, opposite shutters