This sign art is smaller in size at 300 dpi in PhotoShop. I thought it may look better having you enlarge it the best way for your needs. A .pdf is also included.
http://solartechnologies.com/Library/temp/0-Down-Sign.zip

This is the large middle photo
http://solartechnologies.com/Library/temp/condit-41-5-new-filter.zip

This is the medium sized photo on the left
http://solartechnologies.com/Library/temp/Silvers-31-5x22.zip