17_1/4x19_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Environmental Controllers TDS Accuracy: 2% full-scale 1

TDS Accuracy: 2% full-scale 1 LSD

This water- soluble blend can easily be applied to an entire yard

B-Lite 315W CMH 4000K High CRI

covering defects in materials and workmanship under normal use conditions

17_1/4x19_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Environmental Controllers TDS Accuracy: 2% full-scale 1Nordic 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