All of our Panels are Laser cut from Steel Plate and Powder Coated with a Semi- Textured Exterior Black Finish. They all meet 4 inch code. Our Standard Panels are Flat Steel Panels with the designs cut out of them. Our Bordered panels are our flat panels with a 2 inch wide flat bar welded around the outside with screw holes in them for mounting. Our Easy fit are flat panels with a hand rail and toe rail on top and bottom with a 2 inch wide flat bar welded on each side with screw holes in them for mounting.