8_7/8x19_1/8x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack nutrient-combo Immunity booster

Immunity booster

AI11030 - GroStar GS3 EC/PPM/Temp Pen

2 Zone per controller

Give your plants a sturdy growing structure with GROW

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 Immunity boosterNordic 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