Use post up over and over again for temporary applications or depend on it for permanent applications. Post up saves up to 30 in of lumber per post by keeping wood above ground and eliminating the need for expensive pressure treated materials. Welded steel construction with high-tech baked finish is better than galvanized, thus 100% environmentally safe, guaranteed against rust perforation and clamp and weld failure for 25 years. Finish in matte black to blend with variety of settings, post up is also paintable for a custom look. Post up designed to accept standard 4 x 4 in posts (actual dimensions 3-1/2 x 3-1/2 in).