Insulation Barrier for HV1000/HV1600 Whole House Fans
Use this Insulation barrier to form a dam around any model of HV1000, HV1450 or HV1600 Whole House Fan.
Made of durable, double-thick corrugated cardboard, installs in minutes (mounting hardware not included). Fits both R38 and R50 version of the fans mentioned above.
Great for attics with blown-in insulation.