The propane regulator is the heart of every RV gas system, it makes sure you have the right amount of pressure to run your fridge, furnace, water heater, and your stove. It ’ s built to connect with standard 3/8 inch connectors and is relatively easy to install. The biggest benefit of this style regulator is that you can use it directly for your RV or attach it to other appliances. Overall we thought the 2-stage Regulator was a great option for most RVers. Package: 1 x Horizontal Two Stage Propane Regulator 1 x 20” Stainless Braided Propane Hose Please Note: 1/4'' Male NPT is not 1/4" Male inverted flare. Please check your connector before you order. Required Teflon tape or thread sealant when installing. Checks for leaks on propane appliances before use it, ensuring your safety.