17_1/4x19_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Tents & Tarps For indoor growers

For indoor growers

ZeroTol HC has been formulated for use in hemp & cannabis production

multi-voltage (120V/208V/240V) square wave technology runs 315W ceramic metal halide lamp

• 5 years of product development and testing ensures performance & reliability

The aluminium impeller is suspended in mid-air with silicone mounts to absorb vibrations and to reduce noise

17_1/4x19_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Tents & Tarps For indoor growersNordic 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