16x18x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Nutrients and Supplements For use in any standard

For use in any standard 500W CMH fixture

and contaminants

if anything should happen

Twister T6 Airflow (Vacuum Bypass Assembly)

660nm (red) and 450nm (blue) were the most efficient LED packages

16x18x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Nutrients and Supplements For use in any standardNordic 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