16_1/4x21_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack grow-systems-trays-reservoirs Zeolite reduces watering and leaching

Zeolite reduces watering and leaching of nutrients

Plant Success Organics Soluble is OMRI and OIM certified making it a perfect choice for the organic gardener

and other HVAC applications

floors and walls of coolers

Soul Big Swell has been designed specifically to increase flower size

16_1/4x21_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack grow-systems-trays-reservoirs Zeolite reduces watering and leachingNordic 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