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 7.75"
- 15 - 14.5" x 10"
- 18 - 17.5" x 12"
- 24 - 23.5" x 16"
- 30 - 29.5" x 20.25"

12 - 11.5" x 7.75"12 - 11.5" x 7.75"15 - 14.5" x 10"15 - 14.5" x 10"18 - 17.5" x 12"18 - 17.5" x 12"24 - 23.5" x 16"24 - 23.5" x 16"30 - 29.5" x 20.25"30 - 29.5" x 20.25"