13x21_3/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack aaron The 4 compressed coir sheets

The 4 compressed coir sheets expand to 1 cu ft

insert stem pointing away from your body into an appropriately sized notch

these fabric pots feature metal rings that allow for plant hanging and twist ties to route through for low stress training

Made from high quality materials

13x21_3/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack aaron The 4 compressed coir sheetsNordic Pure Custom MERV 10 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