16x21_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack house and garden soil Opening roof top can slide

Opening roof top can slide out or lift up to prevent overheating

Designed specifically for electronic ballasts

and breaks down protein and organic matter

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

industrial

16x21_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack house and garden soil Opening roof top can slideNordic Pure Custom MERV 12 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