23x25x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack flowering but they also create shade

but they also create shade

It is designed to give you larger fuller and denser flowers

Duct length is 25 ft and includes 4 zip ties per bag

Tubular motor design

Water resistant for the growing environment

23x25x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack flowering but they also create shadeNordic 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