Check the listing for details. Solar Pool Heater Connector Pack, Ultimate Heavy-Duty Rubber Hoses & Hose Clamps. Condition: New. Listed at 52.18 USD. Molded EPDM rubber hoses designed specifically for use with solar pool heater panels. Used to connect solar panels to one another, attach end caps and vacuum relief valves. Durable UV-resistant EPDM rubber for long life in direct sun. Reinforced center prevents deformation from pressure and vacuum. Hose-clamp indicator ridges for perfect placement and seal. Hose-clamps sold separately. 3.75" wide. *Only hoses made specifically for pool solar applications should be used for connecting solar pool panels or any necessary hardware. Rubber coupling hoses not designed for this purpose may balloon and explode under the high operating pressure of a solar pool heating system. Compatibility: Will work with any solar pool heating system that has round 1.5” or 2" I.D. header manifolds and makes attachments with rubber hose type connectors. What's Included (4) 3-3/4" Panel Connector Hose (8) Hose Clamp, Stainless Steel Measurements & Sizing 1.9″ (1-7/8″) I.D. Connector Hose: 1.9″ (1-7/8″) I.D. For use with solar pool panels containing a 1-1/2″ I.D. header (1.5″ manifold I.D. / 1.9″ manifold O.D.) 2.375″ (2-3/8″) I.D. Connector Hose: 2.375″ (2-3/8″) I.D. For use with solar pool panels containing a 2″ I.D. header (2″ manifold I.D. / 2.375″ manifold O.D.). PRODUCT DATA Manufacturer: Solar Pool Supply MPN: 13052 13052-1 (1.5" I.D. Header) 13052-2 (2" I.D. Header)Molded EPDM rubber hoses designed specifically for use with solar pool heater panels. Used to connect solar panels to one another, attach end caps and vacuum relief valves. Durable UV-resistant EPDM rubber for long life in direct sun. Reinforced center prevents deformation from pressure and vacuum. Hose-clamp indicator ridges for perfect placement and seal. Hose-clamps sold separately. 3.75" wide. *Only hoses made specifically for pool solar applications should be used for connecting solar pool panels or any necessary hardware. Rubber coupling hoses not designed for this purpose may balloon and explode under the high operating pressure of a solar pool heating system. Compatibility: Will work with any solar pool heating system that has round 1.5” or 2" I.D. header manifolds and makes attachments with rubber hose type connectors. What's Included (4) 3-3/4" Panel Connector Hose (8) Hose Clamp, Stainless Steel Measurements & Sizing 1.9″ (1-7/8″) I.D. Connector Hose:  1.9″ (1-7/8″) I.D. For use with solar pool panels containing a 1-1/2″ I.D. header (1.5″ manifold I.D. / 1.9″ manifold O.D.) 2.375″ (2-3/8″) I.D. Connector Hose: 2.375″ (2-3/8″) I.D. For use with solar pool panels containing a 2″ I.D. header (2″ manifold I.D. / 2.375″ manifold O.D.). PRODUCT DATA Manufacturer: Solar Pool Supply MPN: 13052 13052-1 (1.5" I.D. Header) 13052-2 (2" I.D. Header)