11_1/2x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Fertilizer Perfect solution for shipping applications

Perfect solution for shipping applications

Can I dim the BlackBird for seedlings and early veg

Proper hydration of ph probes is vital to maintain wick

Beetle larvae

UL Certified

11_1/2x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Fertilizer Perfect solution for shipping applicationsNordic 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