Dimensions For A Standard Crib Mattress
A full size crib mattress must be at least 27 1 4 inches wide 51 1 4 inches long and no more than six inches thick.
Dimensions for a standard crib mattress. Crib bed dimensions mattress size crib is the american word for a infant bed. However crib mattresses are subject to the mattress flammability testing requirements of 16 cfr part 1632 and 16 cfr part 1633. The adjustable railing must be 26 inches above the bottom mattress at its maximum height and 9 inches above the mattress support at its lowest. A standard crib mattress is 52 by 28 inches.
Standard baby crib mattresses are not all sized identically but instead range in width from 27 5 8 inches to 28 5 8 inches and range in length from 51 3 4 inches to 53 inches. According to u s regulations a standard full size crib is 30 inches wide and 54 inches long. Crib mattresses are not covered by the full size crib standard. A baby crib mattress.
Due to different materials frame designs and style the external dimensions of standard size baby cribs can vary by a few inches even if they belong to the same crib type. Internal dimensions of standard size baby cribs are regulated by the government so they are approximately the same for all full size cribs all standard size crib mattresses fit into all standard size cribs. In addition there is a voluntary standard for crib mattresses astm f2933. At these dimensions the standard crib mattress will fit safely in a full size crib which can have an interior width of between 27 3 8 inches and 28 5 8 inches and an interior length of between 51 3 4 inches to 53 inches.