Quadroflex duct is a corrugated, single ply, multi-sided, flat duct with interlocked seams folded flat and knurled for air-tight performance, strength and flexibility. Quadroflex can be bent in any direction and twisted by hand. Available shapes include round, rectangular, rectangular with curved sides, oval and asymmetric shapes. The duct ends can also be formed to make transition connections to round ductwork.
Clevaflex, 4081 W. 150th St., Cleveland, OH 44135; 216/941-8742; fax 216/941-6505.