3M NADP03-2PK-1E Allergen Defense 12-Month Deep Pleated 4-Inch Air Filters, 2
3M, NADP03-2PK-1E. VERSATILE USES: Air filters compatible with Honeywell furnaces calling for a 4″ filter and Lennox furnaces calling for a 5″ filter. 65 Point Inspection. We proudly stand behind the quality of our products.