PUREFLOW Home Air Filter MERV 11, 21.5x24x1 Furnace Filter, 4 Layer High Efficiency Filtration for Dust, Smoke, Fumes, Pollutants (4-Pack)

PUREFLOW® Advanced Home Air Filters deliver enhanced HVAC filtration performance for everyday homes. Designed with MERV 11 rated multi-layer filtration media, Advanced captures smaller airborne particles than basic filters while maintaining balanced airflow for reliable heating and cooling system performance.

• Features:
• 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 21.5x24x1 MERV 11 air filters for routine filter changes in residential HVAC systems, furnaces, and AC units. Replace regularly for best performance.