16_1/2x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Extension Healthy soil is the key

Healthy soil is the key to healthy plants

The optional Water Detector WD-2  allows the user to detect water leaks or water on the floor of the facility

Lite Controller (Sold Separately)

included Turbo Adapter increases performance by 25%

Hydrofarm's Smart Float comes with a 55-cell floating insert

16_1/2x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Extension Healthy soil is the keyNordic 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