20x20_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack veg-and-bloom Put a little compost

Put a little compost

Open design for maximum light output

Nordic Pure 10x10x1 MERV 10 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

but your plants will also thrive

20x20_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack veg-and-bloom Put a little compostNordic 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