I can 100% guarantee that this smoker is not NSF certified...so this means that in MANY areas you won't LEGALLY be allowed to use it to sell food to the public.
If you look at most of the restaurant equipment you get from Restaurant Depot or Webstaurant store (or similar) just about everything has a small NSF stamp or engraving on it. It means it has been certified to be made of certain anti-microbial materials which will be more food safe than other types of materials. That NSF rating also increases the price of every piece of equipment with that rating on it. A pair of cheap tongs = $2, a pair of tongs with an NSF label on it = $12.
Whoever is trying to open the business needs to read the food code in your state and COUNTY...MOST places require an NSF smoker, but some will allow for a variance as long as the smoker has stainless steel racks, and is fully enclosed / screened in. Others will only allow for NSF smokers which kind of relegates you to the Ole Hickory / Southern Pride, Fast Eddy's Cookshacks type smokers...and the NSF versions of those smokers are quite expensive.