21x23_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack pumps-and-irrigation-supplies the fan can run continuously

the fan can run continuously for 67

Now more than ever

Timers can be specified by the user as they “build” their multi-week crop

Only 1200 watt rated HPS lamp in the industry

Air Velocity: Max 25 mm/sec (4900 ft/min)

21x23_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack pumps-and-irrigation-supplies the fan can run continuouslyNordic Pure Custom MERV 10 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