on the motor head of the vacuum or on the cover of the operator's manual and usually begins with the letter "c."
which filter do i use when vacuuming?
the foam filter is used for wet/liquid vacuuming only. important: the foam filter must be removed after wet vacuuming prior to any dry vacuum operation. the cartridge or cloth filter that came with your vacuum and/or a disposable filter bag are to be used for dry vacuuming only. the cartridge/cloth filter and filter bag must be removed after dry vacuuming, prior to any wet vacuum operation. be sure to use the cartridge/cloth filter that best suits your needs. with most jobs you can 