This compatible, preassembled filter replaces the discontinued Aprilaire / Space-Gard filter 261. Effectively reduces pollen, mold, spores, dust, hair, pet dander, and other airborne allergens from your air. The MERV 11 filter media is electrostatically charged and constructed with spun micro-fiber that also will not retain moisture, which can lead to microbial growth.
Aprilaire / SpaceGard: 2600
Other Stock Numbers: CP11.0421.0X24.03PK