21x27x1 Trane Replacement MERV 7 Plus Carbon AC Furnace Filters 6 Pack flowering Propagation: Mix 2 ml per

Propagation: Mix 2 ml per gallon in non-chlorinated water

Size: 1 qt

as well as (1) 18" daisy chain cable

7 cm)    Total Dimensions    23

21x27x1 Trane Replacement MERV 7 Plus Carbon AC Furnace Filters 6 Pack flowering Propagation: Mix 2 ml perNordic Pure Trane Replacement 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