This is a Dimplex that my wife couldn't live without in a cabinet I built. The rocks on the sides slide out of the way to get to the DVR, satellite boxes, PC, two UPS and other stuff that is buried there on roll out trays.
This picture was taken before we finished the hearth
There are several listing companies that are allowed to use in the US besides UL (US) and CSA (US) ETL and Farmer's Mutual (FM). As mentioned by others, a foreign listing company has to meet certain requirements. First, if is a 50 hertz stove I'm sure it does not meet US standards. Appliance cords in the US are sold seperate so even though it has a NEMA config plug, it does not meet US standard.
And I seriously doubt and sensible inspector inspector would ok it although it is not covered by the NEC. the recept is, not the stove. It's up to the user to use it properly and liable for misuse. 50 hertz electronic circuits don't mix and I doubt the burners will put out like they normally would
BTW JD, how can something be CSA listed and not be OK in Canada? Isn't the "C" in CSA the "Canadian" <Standards Association>?
The problem comes when a product s NOT CSA listed. I heard of hot tubs being rejected that were brought in from USA. We have a lot of cross border shoppers here being so close to the border. Cheaper up front but not if you can't install it without a special one time certification inspection.
Keep in mind that even if it is 50/60 hertz rated, in Britian you are dealing with 230v phase to neutral and ground while hear its 120 to ground. HGH instead of HGN
For an appliance that shouldn't make any difference in most cases. Most exceptions are more code related than real technical issues, e.g. double pole switching might(!) be required in a 230V HGH setup. The only real exception I know of are some boiler controls which use ionisation flame monitors and require a solid ground reference to work properly.