Fellowes Air Purifiers AeraMax® Pro AM3 or AM4 Pre-Filters, 13.75" X 0.13" X 14.38" (9600501)

AeraMax® Pro AM3 or AM4 Pre-FiltersPre-filters capture large particulates like dust and hair and keep carbon filters working effectivelyEstimated life depends on level of particulates but should be changed with carbon filterPre-filters can be changed more frequently in high particulate environmentsCompatible with all variants of AeraMax® Pro AM3 and AM4 Air Purifiers