LOCKING BAND For increasing stability of chimney. Inward flanges around the band fit into grooves at pipe joints. Reinforces joints of chimney suspended below support assemblies and prevents accidental uncoupling. Reinforces joints of chimney extending above roof and should be used at every joint. Highlights:- Size: 6" No. 6T-LB Type A chimney. Locks joints together. Supports stove pipe. Round support assembly. Locking band. Boxed.