They may be higher ash content than Somersets but my glass stays rather clean. Somerset has a lot less ash but glass blackens up. I got them cheap. I might buy them once again for the right rate. Pellet stoves could be freestanding units or inserts that match into fireplaces. https://lukasibqfs.blog-eye.com/34463068/the-best-side-of-pine-wood-pellets