17_1/4x29_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack PH/EC/TDS Meters and Solutions it is rarely in a

it is rarely in a plant available

Corrosion-resistant nylon housing

It is virtually impossible to over-water plants with this formula

• Use at any plant growth stage

making it a truly versatile product that any grower can bring on with ease

17_1/4x29_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack PH/EC/TDS Meters and Solutions it is rarely in aNordic Pure Custom MERV 10 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