They can be higher ash content than Somersets but my glass stays very clean. Somerset has a lot less ash but glass blackens up. I obtained them low-cost. I would purchase them again for the best price tag. Pellet stoves might be freestanding units or inserts that in good shape https://ricardobpesr.blogsvila.com/34495890/a-simple-key-for-high-quality-wood-pellets-unveiled