16 gauge mild steel. Powder coated for indoor or outdoor use.

Item does not come with mounting hardware.

Product Dimensions (inch):

- 12 - 11.5" x 7.5"
- 15 - 14.5" x 9.5"
- 18 - 17.5" x 11.5"
- 24 - 23.5" x 15.5"
- 30 - 29.5" x 19.5"

12 - 11.5" x 7.5"12 - 11.5" x 7.5"15 - 14.5" x 9.5"15 - 14.5" x 9.5"18 - 17.5" x 11.5"18 - 17.5" x 11.5"24 - 23.5" x 15.5"24 - 23.5" x 15.5"30 - 29.5" x 19.5"30 - 29.5" x 19.5"