20x26x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack commercial-greenhouse-fixtures it is manufactured from durable

it is manufactured from durable UV protected HDPE plastic

Four-layer design makes it more durable and resistant to leaks

- Child and pet safe

FMWH3120L is used for (2) 4' bulbs (one on the FLP/T44

Get Connected

20x26x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack commercial-greenhouse-fixtures it is manufactured from durableNordic Pure Custom MERV 13 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