8_7/8x19_1/8x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack nutrient-combo Insect Frass contains every macro-

Insect Frass contains every macro- and micronutrient

With the thickest fabric available on the market and bonded polyester threading

This product is exempt from EPA registration under minimum risk natural pesticide under FIFRA section 25(b)

AI11030 - GroStar GS3 EC/PPM/Temp Pen

Irrigation systems that are regularly maintained with Athena Cleanse treatment will last longer

8_7/8x19_1/8x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack nutrient-combo Insect Frass contains every macro-Nordic 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