Home Slickdeals Blueair Replacement Filter for Blueair 500/600 Series Air Purifiers, Set of 3... Slickdeals Blueair Replacement Filter for Blueair 500/600 Series Air Purifiers, Set of 3 $39.29 By ARCOM - 25 December 2019 139 0 SHARE Facebook Twitter Go to the deal page: Blueair Replacement Filter for Blueair 500/600 Series Air Purifiers, Set of 3 $39.29