Contains the necessary parts for completing a single solar pool heating panel installation to a solid mounting surface. The included hardware will allow the panel to be secured to the mounting surface, connect the feed and return plumbing lines, secure body straps and cap the headers. MEASUREMENTS, SIZING & PRODUCT DATA. 1.9″ (1-7/8″) O. For solar pool panels containing a 1-1/2? Rubber connector hose is. 2.375″ (2-3/8″) O. For solar pool panels containing a 2?