For a more economical alternative for this Holmes HAPF22, 9000439 HEPA Replacement Filter try the Holmes HAP223 Filter.
The Holmes HAPF22, 9000439 HEPA Replacement Filter is a HEPA filter with an activated carbon layer, great for trapping microscopic allergens & dust. Made for use in Holmes models HAP220, HAP221, HAP223, and HAP2234. Also known as part number HAPF22CS.
The HAPF-22 has an efficiency of over 99% with particles at and lower than 1 micron in size. The activated carbon layer traps odors such as cigarette smoke as well as other chemicals found in the air.
Filter dimensions 8" x 4.8" x .9". The HAPF22 should be changed every 3 to 6 months for optimum performance.
Price is for 1 filter.