Filtrete 20x25x4 Refillable Air Filter Starter Kit, MPR 1550, MERV 12, 1 Reusable Air Filter Frame & 2 Air Filters, Fits Honeywell & Lennox, Allergen Bacteria & Virus, Actual size 19.88 x 24.62 x 4.25

CLEANER AIR: This air filter provides 42% MORE MICROPARTICLE CAPTURE than the MERV 12 minimum requirements (Microparticles are 0.3- 1.0 microns in size)
CERTIFIED Asthma & Allergy Friendly: Independently tested to strict standards by a third party to remove over 95% pollen, 92.5% Dust Mite Allergen, 85% Cat Allergen, and 50% microparticles. (Challenged in a test duct with dust containing common allergens, specific to Filtrete MPR 1550 Refillable Air Filter)
ACTUAL FRAME SIZE: The filter frame’s exact dimensions are 19.88 in x 24.62 in x 4.25 in (50.4 cm x 62.5 cm x 10.8 cm). Perfect fit for direct replacement of current Filtrete Brand AC or Furnace Filters
DESIGNED TO FIT Honeywell, Lennox, Space-Gard and more brand media air cleaners. Check actual frame size. The nominal size can be called out differently (20x25x4 or 20x25x5) depending on the brand or the system.
SAVE ON REFILLS: Filtrete Refillable Air Filter refills cost less than comparable traditional Filtrete MPR Air Filters, based on MSRP
20% LESS WASTE than traditional Filtrete Air Filters, by weight
REFILLABLE FILTERS TAKE UP 75% LESS SPACE when storing and disposing (compared to equivalent size traditional Filtrete Air Filter)
REUSE 70% OF THE PRODUCT when you replace the HVAC filter refill (based on product weight)
DESIGNED TO LAST: Reusable air filter frame is designed to last lifetime of HVAC system, up to 20 years (excluding damages, abuses, or alterations)
FILTER LASTS UP TO 12 MONTHS: For optimal performance, change your refillable filter at least once every 12 months