Bionaire 900 Wick Filter for Cool Mist Humidifiers. Replacement Procedure: Important Notice: New Wick Filters 900 do not come with the plastic frames (holders). Frames are detachable and reusable - do not through them away!
Turn off the unit and unplug it from the electric outlet. Lift the power unit to get the access to the wick filters. Pull the frames with wick filters from the holders in the base of the unit. Unlock the plastic detachable frame, remove the wick filter and discard it. Insert new wick filter into the frame and lock it by pushing two pieces towards each other. Replace the frames with new filter back into the holders then put the power unit back on. Plug the unit into electric plug and turn it on.