R-40 Winterization Kit for CL-1500
Use this kit to winterize your QuietCool whole house fan. The insert has an R-40 insulation value. Using this removable grille makes it easy to install the insert, you will not have to remove the screws from the original grille with the change of seasons.
This kit fits the CL-1500, ES-1500, GA, and GX Grilles.