New in the factory packaging. Sold as is, no refunds or exchanges. 

Filtrete MPR 2800 20x25x1 AC Furnace Air Filter, Healthy Living Ultrafine Particle Reduction, 2-Pack

• Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1" 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
• Tip: The higher the MPR (Microparticle Performance Rating), the more particles the filter captures. Select 2500 or 2800 MPR to also capture ultrafine particles
• Filtrete 2800 MPR (Microparticle Performance Rating) equates to MERV 14
• 1550 MPR available in 4”, 4” slim fit and 5” air filters
• For maximum performance, change your home air filter at least every 90 days for 1” filters, and at least every 12 months for 4” and 5” filters.