Customize letterboard header for easy recognition of your libraryLetterboard features an anodized satin aluminum frame with sleek radiused corners. Lockable door(s) mounted on full-length piano hinges (2 keys included). Letterboard features shatter-resistant acrylic windows. Custom header is cut white vinyl. Specify desired text at time of ordering. For header choose from either Times Roman or Helvetica font (shown above). Number of characters will determine the height of the characters for best fit. 290 piece ¾" Helvetica letter and number set included. To view contents of number and letter set, simply click on the Product Guide button located above. Additional letter sets are available and sold separately (keyword: letter sets).Available in 3 sizes. Choose from 1 or 2 door styles. Felt available in 4 colors: -01 black, -02 blue, -09 grey, -53 burgundy. To view color choices, simply click on the View Swatches button located above. Overall dimensions: Part Number Description H x W x D 47-16 1 Door 36 x 24 x 4" 47-17 2 Door 36 x 48 x 4" 47-18 2 Door 36 x 60 x 4"