EFP Humidifier Filter Holmes C HWF65PDQ-U (6-Pack) Includes (6) Humidifier Filters as pictured Approximate Measurements: 21-15/16" L x 7-5/8" W x 1" T Top Quality, Generic Aftermarket Part - 30 Day Money Back Guarantee Replacement for Holmes HWF65, HWF-65, Type C, HC15, HC-15