12_1/8x15x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Grow Light Ballasts Both aluminum flange openings also

Both aluminum flange openings also assist in absorbing sound waves from vibrations

Do not release in direct sunlight

which converts the oxygen in the air into Ozone

Acting as a wetting agent

Not tall enough for you

12_1/8x15x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Grow Light Ballasts Both aluminum flange openings alsoNordic 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