NEW 2-Pack 310 Replacement Filter 20x20x4 Compatible with AprilAire 1310 2310
Long-lasting Performance: Engineered for durability, 310 air filter provides consistent clean air for up to a full year.
210 Replacement Filter MERV 11 20x25x4 Fits Aprilaire 1210 2210 2216 2PK
Not compatible with.