21_1/2x23_3/8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Amendment Each tag lasts 15 days

Each tag lasts 15 days

Only use with EYE HORTILUX e-Ballasts

Its motor is redesigned for stronger performance and are built for years of continuous use

Spray distance with water base (horizontal)²: 2 metres (39

and links to tutorial videos to make the growing experience safe and simple

21_1/2x23_3/8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Amendment Each tag lasts 15 daysNordic Pure Custom MERV 12 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