17_1/4x29_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack trays direct from your computer

direct from your computer

only the 1st nymphal stage is six legged

Available Phosphate (P2O5)………

With a compact size

Sodium Molybdate

17_1/4x29_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack trays direct from your computerNordic Pure Custom MERV 7 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