21_1/4x21_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Steel stake Kills mites & their eggs

Kills mites & their eggs

High effciency top-bin Samsung LM301H 3000K & 5000K。

allowing the unit be used as a 2 or 5 lb unit

Uniform plant growth wall to wall Geometry

FMWH7230L is used for (4) 4' bulbs (one on the FLT44240

21_1/4x21_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Steel stake Kills mites & their eggsNordic 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