Despite having plenty of seasoned undercover wood, I supplement my heating needs with these: hardwood pallet cut-offs, white oak, mostly hickory, hard maple, and some cherry. These have been air-dried for one year and are barkless and burn phenomenally in the Blaze King. Lots of the pieces weigh 15 20 lbs $500 delivered.These burn down to a powdery ash,must load on a hot coal bed as they are hard to start by themselves.I've spent most of the day loading them in the shed show which is 10X12 a perfect fit.