The Filtrete 20x30x1 Flat Air Filter, made by 3M, helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment. Use these two 3-month 1-inch home air filters in your furnace, air conditioner or HVAC system. For optimal performance of your heating and cooling system or HVAC system, change your furnace filter at least every 90 days. Includes two 3-month 1” Filtrete 20x30x1 Flat Panel AC Furnace Air Filter helps capture unwanted particles Designed with exclusive Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through VERSATILE USES: Works for changing the air filters in your furnace, air conditioner/heating system or HVAC system CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days SMART APP: Use the Filtrete Smart App (iOS or Android) to set 30-, 60- or 90-day reminders to change your air filter Actual Length (Inches): 29.7 Actual Thickness (Inches): 0.8125 Actual Width (Inches): 19.7 Common Length (Inches): 30 Common Size (W x L x T): 20 x 30 x 1 Common Thickness (Inches): 1 Common Width (Inches): 20 Air Filter Longevity (Months): 3 Captures Bacteria: No Captures Debris and Lint: Yes Captures Dust Mite Debris: No Captures Household Dust: No Captures Mold Spores: No Captures Particles that Carry Odor: No Captures Particles that Carry Viruses: No Captures Pet Dander: No Captures Pollen: No Captures Smog: No Captures Smoke: No Commercial/Residential: Residential Filter Efficiency (Percentage): 20 Filter Type: Basic flat Material: Synthetic MERV Rating: 1 MPR Rating: 0 Package Quantity: 2 Warranty: Limited lifetime Washable: No App Compatibility: Yes Bluetooth Compatibility: No Smart Compatible: No Wi-Fi Compatibility: No Works with Air Conditioners: Yes Works with Android: Yes Works with iOS: Yes CA Residents: Prop 65 Warning(s): No UNSPSC: 40101700