Selkirk's Commercial/Industrial Venting product division has introduced the Metalbestos® ZeroClear™ Z3 factory-built grease duct, which eliminates on-site welding, lowers labor costs, and takes up less space compared to conventional welded ducts, says the company. The ZeroClear system permits zero clearance between the duct and combustibles because of its high-performance insulating characteristics and its integral fire-rated chase, the company says. The modular units are assembled using a simple coupling system.

Selkirk, 1301 W. President George Bush Hwy, Ste. 330, Richardson, TX 75080; 800-992-8368; 877-393-4145 (fax);