Generic 2000 Replacement Filters Compatible with Air Doctor 2000 Series Air Purifier, fits Model 2000, 2000i, 1 Premium Filter + 2 Activated Carbon Filter and 4 Pre-Filters∩╝7 Pack∩╝

: 2000 Replacement Filters Compatible with Air Doctor AD2000 and AD2000i Air Purifier | -- : ) -:14.2'' x 11.8'' x 0.1''; ) : 14.2'' x 11.8'' x 0.5''; ) : 14.2'' x 11.8'' x 0.9'' | : The Premium 2000 Replacement Filter manufactured with advanced low-energy and low-density structure technology, verified by the manufacturer | : The 2000i filter works alongside the new fine sponge pre-filter and Premium activated carbon filter, | - : The package includes 1 Premium filter, 2 carbon filters, and 4 sponge pre-filters. We recommend replacing the activated carbon every 6 months and the main every 12 months for optimal performance (depending on your usage)