25x28x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack environmental-controllers Trichoderma harzianum protects the plant

Trichoderma harzianum protects the plant from several soil borne pathogens

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

Positive pressure drain allows proper drainage without the need for a drain trap

and aeroponic systems

and the environment

25x28x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack environmental-controllers Trichoderma harzianum protects the plantNordic Pure Custom MERV 8 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