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Ships within 48 hours · Estimated delivery Sep 13 - Sep 18
Convert from sodium to halide and back
3 shelves for pots and seed trays included
plastic stencil
and quick start guide
21x21x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Controller Convert from sodium to halideNordic Pure Custom MERV 14 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
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