16_1/4x21_1/2x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack grow-system/-trays/-reservoirs The 4 gallon translucent poly

The 4 gallon translucent poly tank has a built in backpack style harness for portable ease of use

The silicone rubber boot not only provides additional shockproof protection from accidental drops but also increases the tactile feel of the meter making it easier to hold

still remains the favorite of hobbyist and commercial growers throughout the U

small caterpillars

Meets USDA & FDA Requirements

16_1/4x21_1/2x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack grow-system/-trays/-reservoirs The 4 gallon translucent polyNordic Pure Custom MERV 14 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