8x18x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack pest-and-disease-control Proprietary ridge vent design maintains

Proprietary ridge vent design maintains ideal lamp operational temperature

• Helps create more uniform crop maturity and quality

Designed for small enclosures

So much light from just one luminaire

- 24" filter bed

8x18x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack pest-and-disease-control Proprietary ridge vent design maintainsNordic Pure Custom MERV 10 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