21_1/2x23_3/8x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack New-releases containing CNC machined aluminum frames

containing CNC machined aluminum frames with a modern brushed black finish

It has 5 Unique Mycorrhizal Fungi species

2 x Micro Drip | 16-17 mm Pipe Fitting | T (Single Unit)

This model has been used effectively to reduce odors in grow rooms and drying rooms

21_1/2x23_3/8x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack New-releases containing CNC machined aluminum framesNordic 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