9x27x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Cone Filler - Kelp - contains an

- Kelp - contains an abundance of goodness from the sea in the form of naturally occurring growth hormones (cytokinins

It has two pull chains that allow for easy adjustments of speed or direction

Made from USDA and FDA-certified materials

lawns - any place that burrowers inhabit

OMRI listed for organic use

9x27x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Cone Filler - Kelp - contains anNordic Pure Custom MERV 13 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