16_3/8x21_3/8x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Synthetic Pro Edition Promotes numerous buds and flowers

Promotes numerous buds and flowers

• TIP OVER switch shuts off gas source if the unit falls or tips over

FULL HUMIDITY CONTROL – The two large top vents and two smaller side vents are adjustable and give you total control of the humidity levels in the plants’ environment

SPECIAL ALTITUDE version (+6500 FT)

16_3/8x21_3/8x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Synthetic Pro Edition Promotes numerous buds and flowersNordic 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