Corning 3950 Corning 9989 Fiber Glass Wool

Pliable glass wool is manufactured from Code no. 9989 glass and contains minimal heavy metals — suitable for use as a filtering medium. Fine glass fibers have diameters controlled to approximately 8 µm. Fiber glass wool is supplied in the form of roping approximately 2 inch dia x 22 ft long per 1-LB Pack. Available 1 lb/Pack.