Aspen pads are made of shredded aspen wood and are approximately 75% efficient. Rigid Media pads are made of glued together cellulous material that is honeycomb in shape and the standard product is approximately 85% efficient.
Aspen pads are made of shredded aspen wood and are approximately 75% efficient. Rigid Media pads are made of glued together cellulous material that is honeycomb in shape and the standard product is approximately 85% efficient.