Palmer's flanges are hand-laid, one-piece construction using the same resin as the tank liner. Flanges are available in sizes from 1" to 24" and will be permanently bonded to the tank wall at any location on the shell or heads as needed. Different styles are available depending on the required service. Fiberglass flanges are designed for light to moderate use. Can be used on any tank, depending on placement and type of operation. We recommend that all flanges 6" and smaller have some type of reinforced gusset.