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• Low phosphorus levels help prevent excessive elongation
The pH level should be checked daily
and size options
a jar test is highly recommended before applying this product
Staphylococcus aureus
17_1/8x26_1/2x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack books • Low phosphorus levels helpNordic 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
US$ 35.00
US$ 43.00
