Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
Do not use at full strength to avoid deterioration of equipment components
Chemboys PH Down Max is the most potent and cost-effective ph Up solution available on the market today
1/2" grommet
Use in combination with Gold Label Roots
The most advanced economically priced
15x17x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Growing Media Do not use at fullNordic 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
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