Blue outer cloth zipper bag is designed for Sanitaire Professional Series vacuum cleaners including models S649, S660, S675A S677. Micro-Allergen filtration. Blue Velvet. Includes gray bag bellow and features two-hole coupling to attach bag to nozzle base.  

Can be used on models that take outer zipper bags 5937735 or 5397729.

For use with style ST disposable paper bags.