9x13x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_hi so you get full protection

so you get full protection without the lingering smell

Tests at 90CM above the canopy produce a highly consistent 350Par spread over an area of 1

and hearty field vegetables

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Royal Flush is a salt-eliminating

9x13x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_hi so you get full protectionNordic Pure Custom MERV 13 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