Amerivent Wall Thimble, 3 Wall, 6″

Highlights: 3 wall Size: 6″ Width: 18″ Inside Diameter: 9″ Outside Diameter: 13″ Finish: Galvanized Adjustable from 4 1/2″ to 8″ Used with tee branch and chimney section to provide proper clearance to combustible materials Matte black painted surface for interior wall eliminates need for trim plate Standards: UL Listed