15x19x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Water Pumps & Irrigation Supplies Controlled Release sachet mites emerge

Controlled Release sachet mites emerge 8-12 days after application

These systems are specifically designed for serious growers

the Smart Lighting Controller is portable

Made of plastic

15x19x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Water Pumps & Irrigation Supplies Controlled Release sachet mites emergeNordic Pure Custom MERV 12 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