13_1/4x13_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Aeromixer Synthetic Pro Edition Grow Big - The Right

Grow Big - The Right Juice for the Right Use

Canvas Density: 1680D

Replaceable double junction pH probe included

It comes with a water detector WD-1 for leaking alert and watering confirmation

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13_1/4x13_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Aeromixer Synthetic Pro Edition Grow Big - The RightNordic 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