Once your little one has outgrown the crib, this Toddler Bed Conversion Rail Kit allows you to easily convert it into a toddler bed. With a simple installation using just four included screws, you can extend the use of the crib until your child is ready for a twin bed. Measures 51.5"L x 1.125"W x 13.5"H. Compatible with the Alpha crib (M7591), Anastasia crib (M7801), or Jamie crib (M7301) to convert to toddler bed.* Features: Extends the useful life of your DaVinci crib and converts your crib to a toddler bed Compatible with the Alpha crib (M7591), Anastasia crib (M7801), or Jamie crib (M7301) to convert to toddler bed.* Lead and phthalate safe Non-toxic finish Made of solid New Zealand Pine wood from sustainable forests Measures 51.5"L x 1.125"W x 13.5"H 1 year warranty* Rail is not compatible with older model and/ or Drop Side model cribs