Amaircare 2500ET Easy-Twist is...
AirPura C600DLXW Carbon Filter is AirPura Original Oversize carbon filter replacement for AirPura C600DLXW (C600DLX-W) whole house air purifier.
AirPura Central HEPA-Barrier Filter is AirPura Original HEPA-type filter replacement for AirPura whole house air purifiers.
AirPura Whole house Pre-Filter 4-pack is AirPura Standard Polyester based pre-filter replacement for AirPura whole house air purifiers.
AirPura Felt Gaskets is a set of two original AirPura gaskets used to seal the filter compartment in AirPura air purifiers.