18_1/4x22x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack lighting-&-electrical-components 200K (Veg)

200K (Veg)

perfectly cover 5x5 ft (flower)

Hortilux uses a glass that allows the UV light to pass through benefiting plant growth

Phat filters remove the strongest and most potent plant odors

3-micron mesh size

18_1/4x22x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack lighting-&-electrical-components 200K (Veg)Nordic 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