Style 220 is most of the weavers number for the thicker filament 3 ounce crowfoot weave 4 harness satin fiberglass cloth. BGF uses 2220. Style 220 is a 3.22 oz/sq yd 60x58 ends/inch 4 harness satin weave fiberlass cloth that uses the yarn ECE 225 1/0 in the warp and fill. The 220 sold on this page is finished with the clear structural epoxy silane CS724. The 220 with the CS724 is pretty stiff but not quite as stiff as the 2220 with the 460 finish. Attempts to relay the comparative stiffness of the fabrics are done with photos of the 220 and 2220 using a baseball. The 2220 with the 460 won't even come close to forming over the baseball. The 220 with the CS724 silane for epoxy finish is available in 50" in 10, 20, 30, 50 and 100 yard rolls.