26x30x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack growing-accessories The extended collar allows for

The extended collar allows for easy duct installation and taping

The module converts analog 0–10V and 0–11

Outside Diameter: 40

and tray which incorporates an adjustable drainage system which allows water to drain and air to circulate promoting healthy more productive plants

26x30x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack growing-accessories The extended collar allows forNordic 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