The Purafilter 2000® Adjustable ECO Filter can be adjusted to fit standard size air vents from 20 x 25 x 1” down to 14 x 20 x 1”. The filter media helps to reduce airborne allergens and is designed to perform as a MERV 8. The reusable filter grid and frame and washable filter media can provide years of service while helping to reduce landfill waste. Traps pollen, dust and dander sized particles Adjustable to fit sizes 14 in x 20 in x 1 in to 20 in x 25 in x 1 in No replacement pads needed MERV 8 rated filter media Filter measures 20 x 25 x 1” (actual size 19.5 x 24.5 x 1”) Filter media and grid cuts to size Frame Lasts 10 Years Washable filter media lasts up to 2 years with regular washing High efficiency three stage filter media Actual Length (Inches): 24.5 Actual Thickness (Inches): 1 Actual Width (Inches): 19.5 Common Length (Inches): 25 Common Size (W x L x T): 20 x 25 x 1 Common Thickness (Inches): 1 Common Width (Inches): 20 Air Filter Longevity (Months): 24 Captures Bacteria: No Captures Debris and Lint: Yes Captures Dust Mite Debris: Yes Captures Household Dust: Yes Captures Mold Spores: No Captures Particles that Carry Odor: No Captures Particles that Carry Viruses: No Captures Pet Dander: Yes Captures Pollen: Yes Captures Smog: No Captures Smoke: No Commercial/Residential: Residential Filter Efficiency (Percentage): N/A Filter Type: Cut to fit For Use With: N/A Material: Synthetic MERV Rating: 8 Package Quantity: 1 Washable: Yes App Compatibility: No Bluetooth Compatibility: No Wi-Fi Compatibility: No Works with Air Conditioners: No Works with Android: No Works with iOS: No Warranty: 2-year limited CA Residents: Prop 65 Warning(s): No UNSPSC: 40101700