Made of high quality 10 ounce Shaker felt to capture dust to one micron! This material has both high breath ability and excellent dust release - the ratio of collection is 50 CFM per square foot of cloth. Shaker felt is "singed" on the collection side to create the dust cake that actually captures additional dust.
WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood.