21_1/2x23_5/16x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Electrical Components one corded speed controller

one corded speed controller

Derived From: Potassium Sulfate

Made from the finest ingredients

making it an excellent additive to nutrient programs at any scale

Highly reflective panels redirect photons back to canopy to increase PPFD by 2% versus bar style fixtures

21_1/2x23_5/16x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Electrical Components one corded speed controllerNordic Pure Custom MERV 8 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