20x20_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack commercial-lighting-fixture The patented formula works faster

The patented formula works faster than the other leading herbicides

Increases the availability of nutrients

TTT 1600 Power Cord

This controller will run twelve (12) HID lights at 240 V

healthy blooms and optimal plant development

20x20_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack commercial-lighting-fixture The patented formula works fasterNordic 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