Abatement Technologies H502 Pleated Filter 2 Pack Cleaner Air Filter Replacement Kits Left Filter — U01 002 Microparticle Filters Left Filter — U01 002 500 10 5 8" × 13 3 8" Right Filter — U01 001 500 14 5 8" × 13 3 8" Pack Quantity 2 filters (1 left + 1 right) Coating Antibacterial virus suppressing oil repellent Cleaning Interval Every two weeks — vacuum with soft bristle brush attachment Replacement Interval Annually for best performance Care instructions: Vacuum every two weeks using a soft bristle brush attachment PLFY P08NCMU ER3 The Abatement recommended replacement schedule for the H502 pleated filter is as follows Use the convenient filter indicator light to determine the following: Low particulate 1x month or when filter light goes on