The intermediate filter should be replaced with every fifth change of the Enviromaster 7 paper bag and whenever there is damage or a visible collection of debris on the outside of the filter. This 14" replacement filter is meant to be used only with the Enviromaster hazardous waste vacuum, and comes as a dual filter per pack.

To replace this filter, simply remove the motor head. Using a damp disposable cloth, wipe down all exposed surfaces on the underside and carefully set aside. Put wiping cloth down, DO NOT discard. Remove the Enviromaster CT-5 HEPA filter cautiously as not to damage or puncture the paper media used in the filter. Set aside. Remove intermediate filter and dispose of it along with the wiping cloth in an OSHA approved poly bag, and in accordance with local hazardous material regulations.