4" DuraVent DirectVent Pro Attic Insulation Shield - 46DVA-IS
This attic insulation shield is required for installations that pass through an attic to prevent insulation and debris from accumulating near the vent. Provides 1" clearance to combustibles. Includes base with tube, extension tube and collar.
WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.