Alphabet Shelf Guides Item # Type FGD5800 X-Ray FGD5900 Letter Stocked in Yellow. Alpha sets of 25 include an index printed MC and one printed XYZ. Sold in quantities of 25 per carton. Blank Guides Item # Type FGD7900 X-Ray FGD7800 Letter Stocked in Yellow. Blank guides have clear pockets on both sides. Includes white insert cards. Sold in quantities of 25 per carton. Numbered Guides Item # Type FGD5300 X-Ray FGD5700 Letter Stocked in Yellow. Numbered sets are from 00-99. Sold in quantities of 100 per carton.