21_1/2x23_3/8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Amendment Luer Lock Hub for all

Luer Lock Hub for all types of size attachments

Rounding out the system is the PHRS010 (Enclosed) Reflector and a premium European-made DE lamp with rated PAR output of 2100 μmol/s

Each tag lasts 15 days

and links to tutorial videos to make the growing experience safe and simple

21_1/2x23_3/8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Amendment Luer Lock Hub for allNordic Pure Custom MERV 12 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