28x28x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_hf Creates a thorough and even

Creates a thorough and even aeroponic mist

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in addition to an extra-large hopper for easier feeding

and a modular width

28x28x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_hf Creates a thorough and evenNordic Pure Custom MERV 13 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition