Green Link releases height extensions for its KnuckleHead support system consisting of Schedule 40 PVC pipe which slip into the standard lengths of 6”, 12” and 18”. Custom lengths also are available. All KnuckleHead designs including Lite Pipe, Heavy Pipe, Strut and Paver supports, are height adjustable in about a 1” range by rotating the head. The PVC extensions greatly increase the height to meet special codes or climates that present challenging conditions such as heavy snow, Green Link notes.

Green Link.