Generic 3000 Replacement Filter Compatible with Air Doctor 3000 Air Purifier, 1 Premium Filter + 2 Activated Carbon Filters + 4 Pre-Filters (Not for AD3500)

: 3000 Replacement Filters Compatible with air doctor AD3000 | -- : ) -:16.3'' x 13.4'' x 0.1''; ) : 16.3'' x 13.4'' x 0.9''; ) : 16.3'' x 13.4'' x 1.4'' | : Designed with more pleats for a greater expanded surface area, delivering superior performance and extended service life | : The 3000 filter for airdoctor works alongside the new carbon pre-filter and activated carbon filter | - : The package includes 1 premium filter, 2 carbon filters, and 4 carbon pre-filters. We recommend replacing the activated carbon every 6 months and the premium filter every 12 months for optimal performance (depending on your usage).