20x21_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Meters & Solutions 9 cubic foot series vacuum

9 cubic foot series vacuum oven is a horizontal chamber structure

Available in an array of industrial strength sizes

- 1” heavy webbing reinforcements

larval and adult forms of the targeted pest insects

20x21_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Meters & Solutions 9 cubic foot series vacuumNordic 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