Precision Compatibility: Engineered for ‌Aprilaire 2400‌ and ‌Space-Gard 2400 Whole-House Air Cleaners‌, this ‌401 Furnace Filter Replacement‌ guarantees a perfect fit. Maintain HVAC efficiency and air purification performance with factory-standard compatibility. MERV 13 Advanced Air Filtration: Delivering ‌99% cleaner air‌ for fresher breathing and a healthier home environment. 16”x25”x6” Size & 3-Pack Savings: Nominal dimensions (‌16x25x6 inches‌) ensure seamless airflow. Includes ‌3 filters‌ for 8–12 months of coverage (replace every 2–4 months for 24/7 use). Cost-effective bulk packaging cuts yearly maintenance costs. Valuable Package:Get 3 Pack of 401 Furnace Filter Replacement at a cost-effective price, significantly saving your yearly air purification needs. If it is used 24 hours a day, we recommend that you replace the filter at least once every 8-12 months. Lifetime Support Promise: Backed by ‌24/7 customer service‌ and a 100% satisfaction guarantee. Contact us for replacements, troubleshooting, or returns—no questions asked. Invest in cleaner air with zero risk. 401 Replacement Furnace Filter Compatible with AprilAire 2400, Space-Gard 2400 Whole-House Air Purifiers