Compresses to fit all makes of roof vents. Adds 3" of insulation to keep light, heat and condensation out and cool air in. Measures 14" x 14" x 3". Outer shell removable with zipper. Made in USA.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov