21_1/2x23_5/16x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack commercial-greenhouse-fixtures Maintaining the hydrated layer and

Maintaining the hydrated layer and clear junction will help to ensure a fast and reliable measurement

Our Greenhouse Film features a semi-clear finish that provides excellent light diffusion to aid in overall plant growth

pls adjust the height and brightness of the grow lamp appropriately

maintains potency

which makes cleanup easier and less frequent

21_1/2x23_5/16x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack commercial-greenhouse-fixtures Maintaining the hydrated layer andNordic Pure Custom MERV 10 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