18x28x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack cube Harvests are solid

Harvests are solid

These mineral glass lenses are infused with rare earth elements to filter the grow room light spectrum and restore natural color

This Product Controls These Pests or Diseases: Anthracnose

Spray Pattern: 160 Degrees

bountiful blooms that are extra fragrant and foliage that is strong and full of color

18x28x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack cube Harvests are solidNordic 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