21x27x1 Trane Replacement MERV 14 Plus Carbon AC Furnace Filters 6 Pack Water Filtration New silicone seal between the

New silicone seal between the lid and bin make the connection 100% airtight - with no air loss

Heavy duty light-proof zipper

Funk Fighter diver bags are air tight water proof bags that will keep your most import possessions dry and out of the elements

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

21x27x1 Trane Replacement MERV 14 Plus Carbon AC Furnace Filters 6 Pack Water Filtration New silicone seal between theNordic 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