The new SureLock™ B-Vent Locking System makes installations fast and foolproof. Join sections of Metal-Fab B-Vent, and twist and engage the SureLock to keep installed pipe from coming apart on the job. No sheet metal screws are required, and easy disassembly won’t damage the pipe.

The locking system is now standard on the most 3 in.-to-6- in. diameter pipes. Metal-Fab, Inc. , P.O. Box 1138, Wichita, KS, 67201; 316-943-2351; 316-943-2717 (fax); (website).