With unlined flues, or flue tiles that don't extend high enough above the chimney crown to "catch" the mounting screws of single-flue chimney caps, order a set of flue grippers. They can be used with all Gelco and HomeSaver single-flue chimney caps. Installation may not be totally secure in extremely high winds.
Available in 12 ga. Stainless Steel and 12 ga. Galvanized
Set of 4