21_1/2x23_5/16x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack extraction 10" x 20" Premium X-DEEP

10" x 20" Premium X-DEEP 72 Cell Seedling Plug Tray - USAConfiguration: 6 x 12Outside dimensions (inches): 10

• Use High Altitude model at 4500 ft elevation or above

Decreases premature flower aging

* 510 Cartridge Compatible

Wooden Packing Size 23

21_1/2x23_5/16x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack extraction 10" x 20" Premium X-DEEPNordic 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