Fujitsu K9312921010 OEM replacement filter. This filter is designed to fit the following models of Fujitsu mini splits:
ASU9CQ, ASU12CQ, ASU9RQ and ASU12RQ
All of the above indoor units require 2 replacement air filters. One K9312921010 (right side) & one K9312920013 (left side)
Fujitsu recommends that the air filter is cleaned in warm water with a mild soap mix, or with a vacuum cleaner to remove the collected airborne dust and pollutants. After washing the K9312921010 it must be thoroughly air dried before it can be placed back in the indoor unit.
The Fujitsu K9312921010 should be cleaned every two weeks to ensure the best air cleaning performance of the filter.