21_1/4x21_1/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack cleanroom and 51F models

and 51F models

76-cubic foot bags and 2 Yard Totes direct from the manufacturer

HEAVY-DUTY ZIPPER DOOR

Hortilux uses a glass that allows the UV light to pass through benefiting plant growth

Frankliniella occidentalis

21_1/4x21_1/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack cleanroom and 51F modelsNordic 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