17x26x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack growing-accessories Rounding out the system is

Rounding out the system is the DE1000Lh (Open) Reflector and a premium European-made DE lamp with rated PAR output of 1450 µmol/s

Durable shelving perfect for growing plants in greenhouse or sun porch

Expanded size: 8

Adjusting lights by hand is time consuming and causes safety concerns for employees

and simply all you need to regulate CO2

17x26x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack growing-accessories Rounding out the system isNordic Pure Custom MERV 13 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