PUREFLOW Home Air Filter MERV 11, 12x12x1 Furnace Filter, 4 Layer High Efficiency Filtration for Dust, Smoke, Fumes, Pollutants (4-Pack)

["MERV 11 FILTRATION PERFORMANCE. PUREFLOW Home Air Filters are designed to capture dust, smoke, fumes, pollen, pet dander, lint, and other common airborne particles for everyday home air filtration.","HELPS IMPROVE INDOOR AIR QUALITY. Multi-layer filtration media helps reduce particles moving through your HVAC system, making these filters a practical choice for homes with pets, kids, guests, or high daily activity.","BALANCED AIRFLOW DESIGN. Built to support consistent airflow through your furnace, air conditioner, or HVAC system while helping to maintain efficient heating and cooling performance.","4-LAYER FILTER MEDIA. High-efficiency layered construction captures smaller airborne particles than basic fiberglass filters can collect. This also helps protect your HVAC system from dust buildup.","CONVENIENT 4-PACK REPLACEMENT SET. Includes four 12x12x1 MERV 11 air filters for routine filter changes in residential HVAC systems, furnaces, and AC units. Replace regularly for best performance."]