17x29x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Sungrower Trellis Netting 1000’ and Shorter Milky Spore is a one-time

Milky Spore is a one-time application

encourages beneficial microbial activity in the root zone

as they are strong and large enough to withstand the spray

With repeated applications or in the correct mix rates

Includes T5 tube with reflector

17x29x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Sungrower Trellis Netting 1000’ and Shorter Milky Spore is a one-timeNordic Pure Custom MERV 7 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