Fortress Fortress 181112180 Ff Evolution 2X6 Joist 12-ft 18Ga

2-in x 6-in x 12-ft Joist (18 Gauge G90 Galvanized). Frame System works with any type or brand of decking, including composite, PVC, aluminum, tile, wood and tropical hardwoods. Builds flat, stays flat. Designed for low-maintenance, durability, ease of installation and safety. Looks and installs like wood. A noncombustible material, resistant to fire and invulnerable to rotting, warping, splitting and pesky insect damage. Steel is recycled and recyclable, making it more sustainable than wood. Carries a 25-year limited manufacturer warranty.