Larry- yes, that's the fuel filter for the HHot. WRV thought it should be in a compartment where a fuel drip when changing the filter would not cause a problem. the "copper" lines are not copper, but brown colored PEX type plastic tubing. You can put a zip-lock around the filter, spin it off into the bag, zip the bag shut, and spin on a new filter and shouldn't make much of a mess.
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project