Product Details
The QuietCool R-40 winterized insert is designed for use in areas that experience extremely cold winter conditions. This insert significantly enhances the insulation value of the damper box to an R-45 rating when installed during the off-season months of the QuietCool system. The product model WI-1422 is compatible specifically with QuietCool CL-3100 and QuietCool ES-3100 models. It is important to note that this product cannot be shipped to Hawaii and is manufactured in the USA.
