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Automate your feed by inserting Tubing into center holes
Screw on the threaded carb cap to maintain proper airflow and prevent mess
Stir and pour a portion (1/7th) of the mixture into a separate bucket or watering can
5" length provides excellent coverage
21_1/4x21_1/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking Automate your feed by insertingNordic 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
