21x23_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Neem oil Guard ‘n Spray is OMRI

Guard ‘n Spray is OMRI Listed® and a FIFRA 25 (B)-approved pesticide product that is safe for food and feed crops

it also features fuzzy logic programming

00 - Height (in): 0

They can live for up to one month as adults and lay up to 200 eggs in that period

or use it as a judgement call on whether it's time to replace old equipment that becomes a drag on your finances

21x23_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Neem oil Guard ‘n Spray is OMRINordic Pure Custom MERV 10 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