Part #MAP-12
HUMIDIFIER FILTER FOR APRILAIRE MODELS 136
Replaces Part #12
Fits Aprilaire Model 112
Fits Aprilaire Model 224
Fits Aprilaire Model 440
Fits Aprilaire Model 445
Fits Aprilaire Model 445A
Fits Chippewa Model 224
Fits Chippewa Model 225