17_1/2x27x1 Trane Replacement MERV 13 Plus Carbon AC Furnace Filters 6 Pack Hand Tools It has an NPK of

It has an NPK of 5-3-0

Twister Brush Bushing Assy T4

• Up to 20

Dosatron water powered doser is directly installed in the water supply line

• CLEAN COOL TECHNOLOGY

17_1/2x27x1 Trane Replacement MERV 13 Plus Carbon AC Furnace Filters 6 Pack Hand Tools It has an NPK ofNordic Pure Trane Replacement MERV 13 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