16_1/2x21x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Steel stake Measures 9

Measures 9

Introducing De

Trichogramma lay their eggs inside the caterpillar or moth eggs

Their slow feeding habits make them effective against low mite populations and when used preventatively

giving you flexible placement options anywhere in your facility

16_1/2x21x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Steel stake Measures 9Nordic Pure Custom MERV 8 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