Wall mounting kit included, 1500w each (= 5,100 BTU). £100 for the pair, offers welcome
They require hardwiring into a fused spur by an electrician, and a decent amount of flex is still available.
Both work fine, I’m only selling because they’re actually too powerful for my flat! For reference, 1500w is enough to heat a reasonably insulated 6x6m room with 4m window, but you can do the calculations here: https://www.bestheating.com/btu-calculator