After burning through my supply of american wood fibers i began burning my lignetics green letter and man what a heat difference from these. I don't think there is a better pellet on the market (jmho), They burn hot as can be they look different from any other pellet, nice and fat and 1/2 " lengths, what a great pellet by far.. They came up just in time for this cold ass weather and the AWF's are now gone as the were no where as good as the lignetics...