17_1/4x19_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack grow-systems-trays-reservoirs If you have Spider mites

If you have Spider mites

Lens Dimensions: 22-3/8" x 30"

Operating Temperature: 41-140°F

Quantum HO T5 6500K Blue (Item BLB021)

17_1/4x19_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack grow-systems-trays-reservoirs If you have Spider mitesNordic 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