17_1/4x29_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Grow1 5' Steel Stake Correctly manipulates input power sine

Correctly manipulates input power sine wave for type of motors being controlled

including greenhouse

The 1000W HPS ONLY Hot Head Magnetic Ballast is great for the grower on a budget

cable managers

The fungus actively grows with and protects roots if the soil pH is maintained between 4

17_1/4x29_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Grow1 5' Steel Stake Correctly manipulates input power sineNordic 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