The RP-FXDOFO hose, 42-1/8" long, connects hot and cold water supplies for F-9425, #37 and #38 systems, ensuring a steady and safe flow. Built with durable, pressure-resistant materials, it is ideal for either replacement or new installations. Installation is straightforward: turn off the water supply, disconnect the old hoses, then screw the new hose securely, making sure fittings are properly aligned. Tighten firmly without over-torquing and check for leaks once the water is turned back on. With its optimal length and threaded ends, this hose provides a leak-proof, long-lasting connection to maintain the performance of your faucet setup.