We stock Chop Strand Mat in 1-1/2 oz and 1 oz. thickness. 1-1/2 oz CSM is the most common fiberglass you will ever use. It’s great for repairs, covering decks, building components and much more. The 1 oz is used when weight is critical. Racing Pirogues, Model Planes, etc. All are sold by the yard. Available in 50″ wide, 12″ wide, and 6″ wide.