Our non-insulated metallic duct is perfect for use in low to medium-pressure HVAC applications It's constructed from aluminum with a flexible design, allowing for easy installation. A UL-181 Class 1 air connector is included. This duct is recommended for bathroom venting and general purpose venting. · Deflecto was founded on innovative, problem solving products. For over a half century, we have built a tradition of discovering and meeting needs with invention and dependable manufacturing. Today, Deflecto is the world's largest chair mat, bicycle reflector and dryer venting manufacturer and a global leader in sign and literature holders, office workspace accessories and other air distribution products.