FILTER MAIN COTTON GS90, GD90C
Replacement Standard Cotton Main Filter (retains 99.8% @ 3 microns) for discontinued legacy GD90C and GS90 home vacuums.
How to change the GS90 Main Filter
Industrial Vacuum Cleaners,U.S. and Canada
Nilfisk, Inc.Industrial Vacuum Division740 Hemlock Rd., Suite 100Morgantown, PA 19543
Phone: (800) NILFISK(800) 645-3475Fax: (610) 286-7350