Indoor air quality is commonly affected by particles such as dust, pet dander, and viruses. BestAir® is dedicated to providing a clean and comfortable indoor environment for everyone. We have a complete array of high-quality humidification wicks, air cleaning filters, and many other accessories, which will ensure that your indoor air quality will be the BestAir® that you and your family can breathe. We are the largest manufacturer of replacement filters made in USA and are also leading the way for industry standards. Filters out unwanted particles including dust/lint, dust mite debris, mold particles, most smoke, pollen, pet dander, bacteria, virus carriers, odor, and smog while allowing cleaner air to flow through Designed to perform with high efficiency and minimum pressure drop; conserving energy and lowering costs Minimum efficiency reporting value (MERV) of 13; generating the best filtration with fewer particles and contaminants that pass through the filter Using our best tech and design, this BestAir furnace filter is manufactured to trap up to 99% of airborne particles from 0.3 to 10.0 microns Proudly made in the USA Actual Length (Inches): 24.625 Actual Thickness (Inches): 4.375 Actual Width (Inches): 19.875 Common Length (Inches): 25 Common Size (W x L x T): 20 x 25 x 5 Common Thickness (Inches): 5 Common Width (Inches): 20 Air Filter Longevity (Months): 6 Captures Bacteria: Yes Captures Debris and Lint: Yes Captures Dust Mite Debris: Yes Captures Household Dust: Yes Captures Mold Spores: Yes Captures Particles that Carry Odor: Yes Captures Particles that Carry Viruses: Yes Captures Pet Dander: Yes Captures Pollen: Yes Captures Smog: Yes Captures Smoke: Yes Commercial/Residential: Residential Filter Efficiency (Percentage): 99 Filter Type: Electrostatic pleated For Use With: Carrier Material: Synthetic MERV Rating: 13 Package Quantity: 1 Warranty: None Washable: No App Compatibility: No Bluetooth Compatibility: No Wi-Fi Compatibility: No Works with Air Conditioners: No Works with Android: No Works with iOS: No CA Residents: Prop 65 Warning(s): No UNSPSC: 40101700