17_1/2x17_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack AC / Dehumidification / Humidification PhysioSpec Greenhouse: 95 μmol/s

PhysioSpec Greenhouse: 95 μmol/s

5 mm connector designed exclusively to be used with Hanna Instruments edge® Tablet Meters

- Reduce the need for fungicides

root development

NOTE: Do Not use hydrogen peroxide or any chemical sterilizing agents when using Elite 91 ROOTS

17_1/2x17_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack AC / Dehumidification / Humidification PhysioSpec Greenhouse: 95 μmol/sNordic Pure Custom MERV 8 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