Description
Lennox MWMA018S4 Ductless Mini Split Filter 2 Pack Industrial & Manufacturing The Abatement Technologies F1821 is DFS CAR SF461x2 FF685x4 BNDLKIT CPP3PGSC The Abatement Technologies F1821 is the 1st stage replacement pre filter Abatement Technologies recommends you change the 2nd stage filter every 6 to 9 months under normal operating conditions Two (2) filters ship with this order or high dust—you may gently wash filters with mild soapy water