ghostbusterbunny
Adult Guinea Pig
This is actually the same size as the one I displayed so do you think it would be suitable for 2 boars?
The only thing I would say about this one is despite it being two tiers the internal dimensions (ie. what your piggy has to move around in) is less than 4ft by 2ft, it's more like 3.5x1.5 inside so I'd argue that this hutch isn't really big enough. Also not all guinea pigs take to two tiered hutches well so you may find they get stuck on one level or prefer not to go to up or down to the other one.
I may well be wrong, but I think if you were to show that to a rescue (if you were adopting piggies from them, not already having your own) that they wouldn't rehome to this hutch. Especially for boars, where bigger is most certainly better.
You'd be much better off looking for something more like this: The Summerhouse 5ft Rabbit Hutch - Outdoor Rabbit Hutches for a pair of boys or a similar sized cage, of which there are quite a few recommended in this thread. I've got this one: Skyline Maxi XXL Small Pet Cage | Free P&P £29+ at zooplus! indoors which is okay for girls, not as good for boys but if limited for floorspace this is the smallest we'd recommend. I use these as my temporary cages for new arrivals or poorly piggies. If you can find similar 150+ cm cages that would be ideal.