11_1/2x11_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack lighting and you may also choose

and you may also choose between the 100% opaque black vinyl

Shaker Tubes in Vermiculite/Bran: 10-20 mites per sq

OMRI Listed for Organic Use – Approved for use in certified organic production

The round duct tailpiece is compatible with 6” inline exhaust fans

11_1/2x11_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack lighting and you may also chooseNordic Pure Custom MERV 8 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