28x34x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack special-order Get 24/7 pH&EC measurements for

Get 24/7 pH&EC measurements for consistent yields every time

Is this product available in other sizes

The Harvest Keeper Commercial Vacuum Sealer with Instant Start Handle is a premium heavy-duty unit constructed from durable stainless steel and features a digital display with touch control to adjust settings

The Commercial Truncheon® Nutrient Meter has been designed for hydroponic crops that require a higher than normal EC or CF requirement during their growing cycle

Nature’s Brix is a premium blend of carbohydrate

28x34x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack special-order Get 24/7 pH&EC measurements forNordic 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