17x29x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Liquid & Weight Measuring Two (2) trigger cord sets

Two (2) trigger cord sets activate lighting controller via external timers

Indoor Crops: Use 8-16 fl

• Label compatible

BPA and heavy metal-free

- Extremely quiet

17x29x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Liquid & Weight Measuring Two (2) trigger cord setsNordic 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