The CD40x2 has an 8" frame and aluminum construction. It features:
Airfoil blades, which have greater strength, produce less sound, greater sealing ability, and static pressure loss.
The most effective method of energy-saving insulation. Testing has proved that the CD40x2 insulated more efficiently than conventionally insulated blades.
Unique double edge blade seal design that enables higher pressure on either side of the damper to assist in blade to blade seal shutoff.
Linkage concealed out of the airstream for low maintenance and reduced air turbulence.
"Since 1958, Ruskin is the name in air management solutions that engineers, architects and contractors rely on to make buildings safer, more energy efficient and comfortable. Our mission is to make everyone comfortable. From the owners, to the designers, to the installers, to the occupants, Ruskin and our industry partners strive to make your well-being our top priority. We offer the most complete line of air control and architectural products and support them with our reputation for quality design and precision manufacturing. With Ruskin, every product is backed by cutting-edge technology, rigorous testing, on-time delivery and technical support".