17_1/4x23_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack nutrients-and-supplements These new trays from Twister

These new trays from Twister are perfect for drying product

however we recommend using the FloraCapTM throughout the vegetative phase and this unit primarily in the flower stage

integrated flange and 51% open perforation are features of the Can-Lite filter

• Improves root development

Duct Size 8″

17_1/4x23_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack nutrients-and-supplements These new trays from TwisterNordic 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