Quadroflex® is a corrugated, single-ply, multi-sided, flat duct with interlocked seams that are folded flat and knurled. The duct can be bent in any direction (longitudinally or laterally) and twisted 90 degrees clockwise by hand, the company says. It comes in a number of shapes — round, rectangular, rectangular with curved sides, oval, and multiple-sided (asymmetrical). The duct ends can be formed to make transition connections to round ductwork. No special tools are required for installation, and the ducts can be easily cut to length at the jobsite, the manufacturer says. The diameter of the ductwork ranges from 3 to 10 inches. It has an operating temperature range of 0 to 750 degrees F, with a working pressure range of 10 inches of water (positive or negative) and a burst pressure rating of 60 inches of water.

Clevaflex, 4081 West 150th St., Cleveland, OH 44135; 216-941-8742; 216-941-6505 (fax); info@clevaflex.com (e-mail); www.clevaflex.com (website).

eProduct #188