17x29x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Liquid & Weight Measuring - Extremely quiet

- Extremely quiet

Indoor Crops: Use 8-16 fl

The brew chamber has a lid and is translucent with gallon marks for easy reference

BPA and heavy metal-free

Use Extreme Serene in conjunction with any nutrient program or as a foliar feed

17x29x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Liquid & Weight Measuring - Extremely quietNordic 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