Because a queen-size mattress is typically 6 to 7 inches larger and 5 inches longer than a full-size mattress, a bed frame intended for a queen-size mattress would not provide sufficient support for a full-size mattress. The disparity could result in an injury.
According to the Better Sleep Council, a conventional queen-sized mattress measures roughly 60 inches wide by 80 inches long. A regular full-size mattress measures around 53 inches wide by 75 inches long. Full-sized mattresses cannot be kept securely in place by the side rails of a queen-sized bed frame. A full-sized mattress could only be supported by a queen bed frame with significant cross support, such as a frame with several wooden slats. However, there would still be spaces between the mattress and the bed’s sides.