Overall:
Twin:
41" (width), 77" (depth), 50.5" (height)
Double:
56" (width), 77" (depth), 50.5" (height)
Queen:
62" (width), 82" (depth), 50.5" (height)
King:
78" (width), 82" (depth), 50.5" (height)
Inner Size:
Twin: 36" (width), 74" (depth)
Double: 54.5" (width), 74" (depth)
Queen: 60" (width), 80" (depth)
King: 66" (width), 80" (depth)