The Sorelle Princeton Toddler Guard Rail in White will allow you to convert your child's Princeton 4-in-1 Convertible Crib in White into a toddler bed. It helps transition your child from crib to toddler bed, adding a sense of security while allowing for a little more independence. Recommended for children up to age 5. Crafted of New Zealand Pine. Ships fully assembled. Meets All ASTM & CPSC Safety Standards. JPMA Certified. Measures 51"(W)x 5/8"(D) x 20"(H). Crib not included.