21x27x1 Trane Replacement MERV 12 Plus Carbon AC Furnace Filters 6 Pack loose coco 4-hour REI

4-hour REI

It comes equipped with industrial strength aluminum fan blades and operates at three speeds with a smooth side-to-side oscillation

See attached image for specs

Blend 99 is lightly fertilized to support plants early on and allows for fertilization throughout the growing season as needed

lightly dust the transplant hole with granular mycorrhizae before transplanting

21x27x1 Trane Replacement MERV 12 Plus Carbon AC Furnace Filters 6 Pack loose coco 4-hour REINordic Pure Trane Replacement MERV 12 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