The Richmond Collection's Full Bed Conversion Kit - FACTORY 25 is ONLY FOR RICHMOND 4-IN-1 CONVERTIBLE CRIBS MADE IN FACTORY 25. PLEASE REFERENCE THE PRODUCTION STICKER ON YOUR RICHMOND CRIB to identify your Factory Code and confirm Conversion Kit compatibility. The Production Sticker is located on the inside lower Right Side of the Crib. The “Factory Code” is the two-digit number following the Date of Production on your Production Sticker. If your crib has a Factory Code of “-25” you will need this specific rail set to convert your crib into a full size bed.