Made Exclusively for Indoor Air Professionals-sold individually or convenient 4 pack
(Change every 3 months)
- Exclusive 3-ply filter traps more fine particles and lasts longer.
- Reduces airborne microorganisms by up to 86.5% in one pass.
- Internal wire construction does not support microbial growth like cardboard or paper frames.
- 50% more effective than traditional store bought furnace filters.