14_1/2x19x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Reflective & Greenhouse Films a residual insecticide that provides

a residual insecticide that provides up to four weeks of repellency

Citrus Blackfly (Aleurocanthus woglumi)

leading to stronger plants

The sampling assembly provides a stable method to mount the pH and temperature sensors

Simply place the stem of a new cutting into the slit in the insert and watch as it provides support to your plants while still protecting their delicate tissues

14_1/2x19x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Reflective & Greenhouse Films a residual insecticide that providesNordic Pure Custom MERV 14 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