25x28x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Emitters If you are using a

If you are using a recirculating system

Depicted feed rates are for drain to waste hydro or coco coir setup

Gross Weight : 1

and T6 Leaf Collectors

25x28x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Emitters If you are using aNordic Pure Custom MERV 13 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