Abstract: A connector for axially fixing a module or support of a module to an elongate pipe has a central web with a rear flange extending from a rear edge and a front web extending from a front edge. The web may be partially cylindrical with the flanges extending radially. The web is sized and shaped to mate with the outer surface of the cylindrical pipe and extend through a hole in the module support with the rear web against the rear face of the support and the front web against the front face of the support. A fabric layer is wrapped around the outside to conceal the support and connector. A fluid treatment unit with spaced apart modules utilizes the connector to fix the modules axially to the pipe with a fabric layer concealing the support and connector.