Add air flow control to your favourite [Lite] vent models. Pull and push damper wings to maximize and restrict air flow. Simple clip-on install. *Compatible with select sizes of Framed Floor Vent [Lite], Framed Wall Vent [Lite], Flush Wall Vent [Lite]*Vents not included. Features Add air flow control Compatible with select sizes of Framed Floor Vent [Lite], Framed Wall Vent [Lite], Flush Wall Vent [Lite] Built to withstand occasional bending. Constant bending back and forth may cause damper tab to snap. WARNING - Once clipped onto a vent, the damper cannot be removed. Install Guides No tools required! Snap-on installation. INSTALL GUIDE INSTALL VIDEO FAQ Which models can this be used with?Compatible with select sizes of Framed Floor Vent [Lite], Framed Wall Vent [Lite], Flush Wall Vent [Lite]. Can I mount this after I install my vent?It depends on the vent. For the Framed Floor Vent [Lite] and Framed Wall Vent [Lite], you can remove the vent from the duct and clip on at any time. For the Flush Wall Vent [Lite], the damper must be clipped on before installing the vent into the wall. Can I remove this once I've mounted it to my vent?No. Once this is clipped onto the vent, the damper cannot be removed.