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Perlite #3 can be used as a stand-alone medium in drip systems or as a mix-in element with other growth mediums
It measures 11"
No drainage holes
Torched is formulated with natural ingredients—Clove Bud Oil
Pentane is a highly non-polar
20x26x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems Perlite #3 can be usedNordic Pure Custom MERV 7 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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