3M 2021-4 Filtrete Pleated Air Filter - 18 in. W x 24 in. H x 1 in. D 12 MERV (Pack of 4)

Your home should be your sanctuary, starting with the air you breathe. Filtrete Allergen, Bacteria & Virus Air Filters help capture unwanted particles from your household air, contributing to a cleaner, fresher home environment. By proactively capturing dust, bacteria, viruses and allergens, these high performance filters help improve your home's air quality.

• #1 Recommended Brand* (*Filtrete Brand is the most recommended brand of HVAC Air Filters based on the US Filtrete Brand Health Tracker, Ipsos, June 2022)
• The higher the MPR, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing through it
• For optimal performance of your heating & cooling system or HVAC system, change your home air filter at least every 90 days for 1 inch filters, and at least every 12 months for 4 inch and 5 inch filters
• A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy. Sign-up for a filter change reminder program (www.filtrete.com/ChangeReminders) that works for you!
• Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 inch home air filters for your furnace, air conditioner or HVAC system
• Designed with exclusive Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through
• Attracts and captures microscopic particles such as smoke, cough and sneeze debris, bacteria and viruses--and large particles, including lint, household dust and pollen
• Certified as asthma & allergy friendly* (*As outlined in report ASCR: 1246-01)
• Filtrete MPR 1500 has a rating of MERV 12