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Adding a second appliance to your RV's LP gas system usually means either running a whole new line or shutting everything down to tap in. The Marshall Excelsior ME398P installation adapter gives you a dedicated connection point instead, so you can plug in a grill, heater, or other accessory and disconnect it again without touching the rest of the system.
Built from brass and stainless steel with threaded NPT connections, it's designed to hold a tight seal through repeated hookups.
A handy way to give your setup a permanent, leak-tight tap point for whatever gas accessory you run at camp.