16_1/2x21x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Odor Control Field growers should apply Z7

Field growers should apply Z7 at first planting and whenever possible thereafter

A pail of ONA gel attaches securely to the bottom of the Carbon-Air unit

Expand your ebb & flow system up to 48 plant sites on one control unit—depending on reservoir size—control unit and reservoir sold separately

5 amps/120 volts

The Grow1 Inline Garden Water Filter features an inline

16_1/2x21x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Odor Control Field growers should apply Z7Nordic Pure Custom MERV 7 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