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"I switched from a metaldehyde product after getting a dog
depending on temperature and moisture and the female Trichogramma will parasitize up to 300 pest moth eggs
control fan speed and set triggers that activate the fans upon detecting high temperatures
• 2 year warranty
23_1/2x23_1/2x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack nutrient-combo "I switched from a metaldehydeNordic Pure Custom MERV 8 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
