Product review (5 stars): Money saver
Worth the time to save money. Hardest part are mounting the rings for the gas heating tube vent, which I used a pipe coupler and hammer.  The Styrofoam is the insulator, not packing material, and is not removed for assembly. I did  have to drill a hole for the gas exhaust baffle screw.  Good to take pictures as you disassemble.  Includes black junction box, electric heater element and relief valve.  I will now remember to drain for winter storage.