The TED40x2 low-leakage insulated control damper from Ruskin features insulated airfoil blades, which offer strength and sealing ability while reducing noise and static pressure loss. With an 8-inch frame and aluminum construction, the TED40x2 traps a minimum 4 inches of dead airspace between the double blade assembly when closed. 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 unique 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 replaced in the field. The TED40x2 also features linkage concealed out of the airstream for low maintenance and reduced air turbulence.
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