15x17x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack misc At the heart of both

At the heart of both these systems is the new and improved PHB4030 Phantom Commercial DE Ballast with USB Interface

Low Speed: Has a lower noise and airflow rating than high speed models

Bagrada Bugs

10 μmol/joule

Supplied with Certificate of Analysis

15x17x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack misc At the heart of bothNordic Pure Custom MERV 14 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