8x12x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack shoe-cover These loose round plugs fit

These loose round plugs fit perfectly into the Gro-Block hole

Light Size: 875*862*94MM

concentrated forms of silicic acid ever achieved in a stable liquid form

maintaining a precise 62% RH target throughout the pack's active life

With proper application our product can be used on the day of harvest

8x12x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack shoe-cover These loose round plugs fitNordic 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