The most common dimensions of a safety deposit box are 2 by 5 inches, around 10 by 10 inches and a larger option around 20 by 20 inches. Depending on the institution, safe deposit boxes can come in a few different sizes.
Different branches of banks have various availability of safe deposit boxes, ranging from about the size of a shoebox to a large cabinet. The best way to determine which size deposit box is best for specific belongings is to make an appointment with a bank to view sizes in person.
With variations in size come variations in price, which are typically charged on an annual basis.