adjustable seat pedestal 11.5"-17.5",marine pedestal seat,boat seat ... coating,fixed on 360 swivel base adjustable seat pedestal 11.5"-17.5",marine pedestal seat,boat seat pedestal. ... height size: 11.5"-17.5"steel constructed,fixed on 360° swivel ... Canoes. EDC/powder coating finishing available.PIC 1: Min height: 11.5"PIC 2 : Max height: 17.5" adjustable seat ...