11_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack shredder Stable and durable: It is

Stable and durable: It is dimensional stable and non-deform able

Intelligently designed duct ports & vents

After selecting the desired pH setting from 5

Great for Vegetables

RAW® Classic Single Wide size rolling paper with a double feed window

11_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack shredder Stable and durable: It isNordic 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