A purpose-built LP gas transfer hose for RV, camper, and portable propane applications. The Marshall Excelsior MER413-24 is a 24-inch flexible thermoplastic hose with 3/8" female flare fittings on both ends, fully crimped brass ferrules, thermal protection, and a 350 PSIG working pressure rating -- backed by a 5-year limited manufacturer warranty and Made in the USA.
Whether you are connecting a secondary propane appliance, extending a regulator outlet, or plumbing an auxiliary tank in your RV, this hose gives you a safe, code-compliant connection with no improvised adapters. Both ends are 3/8" female flare (SAE 45-degree), the standard fitting found on most RV LP regulators, appliance inlets, and portable propane accessories.
At 24 inches, this hose offers enough reach to connect a regulator to an appliance or to bridge two fittings without excess slack that can kink or chafe. The flexible thermoplastic core bends around tight compartment corners without cracking, and the thermal protection layer adds resistance against heat sources common in RV propane compartments.
Exceeds typical RV LP system operating pressures, rated well above the 11" WC (roughly 0.4 PSI) low-pressure side and the high-pressure tank side.
Crimped brass ferrules are pull-tested to 400 lbs., keeping the fitting-to-hose joint intact even if the hose is accidentally stressed during installation or travel.
Meets Underwriters Laboratories and Compressed Gas Association standards for LP gas hose -- required for code-compliant RV propane plumbing and campground hookups.
Manufactured domestically by Marshall Excelsior with a limited 5-year manufacturer warranty covering materials and workmanship.
Both ends of this hose use a 3/8" female flare (SAE 45-degree) connection. This fitting type has a flared seat inside the nut that seals against a male flare fitting -- no pipe thread sealant or tape is used or needed. The 3/8" size refers to the nominal tubing size the fitting is designed for, and it is the most common connection found on:
Both ends being female means each end accepts a male flare fitting (a threaded male nose with a 45-degree flared nose). Verify your equipment uses male 3/8" flare connections on both sides before ordering.