The new TED40x2 low-leakage, insulated control damper from Ruskin® features insulated airfoil blades, which the company says offers greater strength, produces less sound, provides greater sealing ability, and reduces static pressure loss.
With an 8-inch frame and aluminum construction, officials claim the TED40x2 is proven to be insulated more efficiently than conventionally insulated blades. When closed, the damper traps a minimum 4 inches of dead air space between the double-blade assembly. Additionally, a thermal break between frame sections prevents heat transmission through the frame. As an added feature, blade cavities are filled with urethane foam.

The damper’s double-edge blade seal design enables higher pressure on either side to assist in blade-to-blade seal shutoff. Seals are mechanically locked in extruded blade slots, but can be easily replaced in the field. The TED40x2 also features linkage concealed out of the airstream for low maintenance and reduced air turbulence.