I bought this for my Olympian Wave 6 catalytic safety heater. Fits perfectly. I made a hose to connect this fitting to a 20# propane tank. The tubing I made locally cost $70. Once I had everything together (the propane tank, the hose, that 90 degree elbow and my heater) I re-read all the instructions in the manual and found that there was a hose here at Revain for about $40. If you google "Camco LP gas hose with 57703 regulator" you will find the hose. All you need for this heater is a heater, this 90 degree elbow fitting, a hose and a propane tank. Wanted to mention that just in case you buy the same thing I use it for.
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