Supplemental high-wind kits are recommended for installation sites with frequent high-wind weather conditions. The spring-tension design allows for normal collector expansion and contraction, while also providing additional security . Each row kit contains the necessary parts for one row of panels. Each panel in the row will require one high-wind panel kit (part #12035), which is sold separately. May require additional strap depending on how many panels are in your 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. MEASUREMENTS, SIZING & PRODUCT DATA 1.9" (1-7/8") O.D. Header: For 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") O.D. Header: For solar pool panels containing a 2″ I.D. header (2″ manifold I.D. / 2.375″ manifold O.D.). What's Included (1) Inlet Header Hold-Down Bracket Assembly w/ Tension Spring (8) Header Bracket (2-Hole), Stainless Steel (9) Header Bracket Flashing Base (2-Hole) (4) Strap Clamp, Stainless Steel Manufacturer: Solar Pool SupplyMPN: 1214312143-1 (1.9" (1-7/8") O.D. Header)12143-2 (2.375" (2-3/8") O.D. Header) The sale of this product is subject to the terms and conditions of sale https://www.solarpoolsupply.com/pages/terms-conditions.