5/8" Adjustable Firestop Assembly - W010-4479

This adjustable firestop assembly is designed for use with Napoleon fireplaces and is meant to be used with 5" x 8" flexible direct vent.

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.