Phoenix * GuardianR Pro HEPA * system filter – 4031864 Part #:JAN-HVAC180 Designed to Fit: Phoenix * GuardianR Pro HEPA System* filter Material: HEPA Filtration efficiency 99.97% @ 0.3 µm Case: 4 – 1 pks Dimensions: 2.5″ x 18″ x 18″ OEM: 4031864 You may also like… Read more Phoenix * Guardian R * Carbon filter – 4031878
