23_3/4x23_3/4x1Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack rock-bottom · Safety Adjustable Flame

· Safety Adjustable Flame

it interferes with pest development

and Onion Maggot)

Filtration Operating: 120 Mesh

High balanced output between 400nm and 700nm drives strong vegetative growth through flower

23_3/4x23_3/4x1Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack rock-bottom · Safety Adjustable FlameNordic 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