Shed heaters.
But getting UL listing is nothing more than throwing money at it. It's not about making a safe product, it's about not making an unsafe product and paying to put their logo on your item. Look at all the UL listed extension cords and appliances that caused problems. UL listing is just a pay to play organization. Right amount of money, and you can sell razor blade pacifiers to children.
That said, if I do get interested in selling these outside of friends/family, they will get their listing or whatever is required to make them usable. If nothing else, safe distances on an aluminum or steel plate attached to the back.
(or at least enough legalese to make them stupid resistant. I donated a kidney to a lawyer...I think I'm good for it)
I didn't catch that comment when I was reading your posts yesterday. Thats bullshitte. I ought to know, I worked a number of years for the American Gas Association Testing Labs in Independence, Ohio as a techinician, testing and evaluating gas appliances for AGA certification and at no time was any testing or certification predicated on anything but factual matters. Manufacturers were never allowd to impact the testing in any way, they weren't even allowed to be on the property when testing was being done.
It's not a UL (Underwriters Lab) certification that applies to a solid fuel appliance ianyway, It's, a Warnock-Hershey cert. WH is the solid fuel counterpart of the AGA. Get your facts straight before making baseless comments conjured up from your obviously limited knowledge.
You seem to be on here trolling for customers to advance your idea/agenda more than anything else, or so it appears to me.