17_1/4x19_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack LUXX Bar A high-quality tool kit is

A high-quality tool kit is provided with the purchase of the CenturionPro® Silver Bullet

9 L/kWh - 6

Replace filter cartridge or unit per manufacturer guidelines based on water quality and usage volume

- Fixed or minimum ON-delay setting between 0 and 20 minutes before the first ILS4 outlet or pair of outlets powers up

17_1/4x19_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack LUXX Bar A high-quality tool kit isNordic 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