38" square roof vent. Galvanized steel construction. 7-3/4" baffle diameter opening. 17" x 17" base plate. 1/8" mesh screen. 38 sq. in. of net free area per vent. Designed for composition or shake roofs. Large base offers added protection and ease of installation. All parts are fastened by rivets.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.