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 9.75"
- 15 - 14.5" x 12.25"
- 18 - 17.5" x 15"
- 24 - 23.5" x 20"
- 30 - 29.5" x 25"

12 - 11.5" x 9.75"12 - 11.5" x 9.75"15 - 14.5" x 12.25"15 - 14.5" x 12.25"18 - 17.5" x 15"18 - 17.5" x 15"24 - 23.5" x 20"24 - 23.5" x 20"30 - 29.5" x 25"30 - 29.5" x 25"