One complete filter change: One standard SmokeStop filter.
Compatible with all Blueair 200 & 300 Series Air Purifiers (model numbers that begin with a 2 or 3).
These filters work with regular, E-Series, and Refurbished Blueair purifiers.
Product Dimensions: 18.75" x 14.75" x 2.25"
Net Weight (including filters): 4 lb.
Average Filter Life: 6 months
Filter Efficiency 99.97% of 0.1 micron particles on Speed One