22x24_1/4x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Lamps Growstone GS-1 Hydro Stones is

Growstone GS-1 Hydro Stones is the perfect growing media for vegetables

The DEEP BREATH/ G10 combo boosts yields to unheard of levels

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This trap is 3

) | Airflow: 20 to 69 CFM | Noise: 16 to 38 dBA

22x24_1/4x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Lamps Growstone GS-1 Hydro Stones isNordic Pure Custom MERV 12 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