16x18x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Monitors & Timers Integra Boost 37mm ROUND 62%

Integra Boost 37mm ROUND 62% PACK - NO OVER WRAP OR HIC CARDS INCLUDED (Case of 3500)

Significant increases in yield have been attributed to the addition of silicon to the feed schedule

The full life cycle from egg laying to adult emergence is approximately 22 days

Energy efficiency rating should be 22 CFM/Watt or higher

16x18x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Monitors & Timers Integra Boost 37mm ROUND 62%Nordic Pure Custom MERV 12 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