HomeTake-Off Balancing Dampers and ActuatorsModel ZTS Straight Take-Off DamperModel ZTS Straight Take-Off DamperDiameter*4"5"6"7"8"9"10"12"14"16"18"20"Stick-On Gasket on Flange*YesNoFactory Installed Zipset Actuator*YesNoQuantity*Add to RFQThis 90 degree, abrupt Take-Off damper with mounting flange attaches to rectangular duct and provides a round duct connection feeding an air inlet/outlet.