Metal Grating with Bump and Transparency map

Here is a map for metal grating like one would see in industrial walkways and such. The image comes with its own bump and transparency maps for 3d purposes or the trans map can be used as an easy selection guide for the color map within photoshop. I have switched the format so these images are 800*800 pixels at 72 dpi. Feel free to use however just don't redistribute. If any ones has suggestions on future patterns let me know and I will see what I can do.