Hillman Screw-Bolt+ 1/2 In. x 4 In. Masonry and Concrete Anchor (10 Count) Muellar UL listed and marked as

UL listed and marked as clothes dryer transition duct

Lined stove boards are non-UL listed ember protection stove boards

Solid brass construction eliminates leaks

Five (5) XL-Paks per sellable unit

Hillman Screw-Bolt+ 1/2 In. x 4 In. Masonry and Concrete Anchor (10 Count) Muellar UL listed and marked asMade of engineered steel designed to maintain ductility when cutting through concrete Diameter, length, and product marks embossed on head for easy identification Dust relief thread profile improves speed & reduces effort for 22% faster installation than traditional wedge anchors Integrated washer with serrations under the head to secure the attachment 1 2 In. 4 In.