21x27x1 Trane Replacement MERV 14 Plus Carbon AC Furnace Filters 6 Pack Water Filtration use of a non-ionic surfactant

use of a non-ionic surfactant or spreader-sticker is recommended to improve coverage

Using Coco Coir or Reverse Osmosis water

1 x ECS-6 16ft Extension Cable

The Quantum Dimmable Ballast brings quality

pH reducer solution

21x27x1 Trane Replacement MERV 14 Plus Carbon AC Furnace Filters 6 Pack Water Filtration use of a non-ionic surfactantNordic Pure Trane Replacement MERV 14 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