Clear All | 1 inch | 2 inch | 4 inch | Categories Categories All 1 inch 2 inch 4 inch Filters Close Filter Clear Filter 1 Inch Filters in MERV 8 Shop 1 inch filters in MERV 8. Receive discounts if purchasing a quantity of 3, 6, or 12 of the same filter. 1 Inch Filters in MERV 11 Shop 1 inch filters in MERV 11. Receive discounts if purchasing a quantity of 3, 6, or 12 of the same filter. 1 Inch Filters in MERV 13 Shop 1 inch filters in MERV 13. Receive discounts if purchasing a quantity of 3, 6, or 12 of the same filter. 2 Inch Filters in MERV 8 Shop 2 inch filters in MERV 8. Receive discounts if purchasing a quantity of 3, 6, or 12 of the same filter. 2 Inch Filters in MERV 11 Shop 2 inch filters in MERV 11. Receive discounts if purchasing a quantity of 3, 6, or 12 of the same filter. 2 Inch Filters in MERV 13 Shop 2 inch filters in MERV 13. Receive discounts if purchasing a quantity of 3, 6, or 12 of the same filter. 4 Inch Filters in MERV 8 Shop 4 inch filters in MERV 8. 4 Inch Filters in MERV 11 Shop 4 inch filters in MERV 11. 4 Inch Filters in MERV 13 Shop 4 inch filters in MERV 13. No results found No results match your search. Try removing a few filters.