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A king sized bed is 76 inches wide, while a queen sized bed is 60 inches wide. In fact, most modern steel bed frames can accommodate both the queen sized and the king sized bed. And the headboard attaches to the bed frame, making the headboard extension much easier. A headboard can be extended to fit a king bed.

According to the company, Ace is significantly bigger than your average king size mattress, with dimensions measuring 108 inches by 80 inches (an average king size mattress in the U.S. is 76 inches by 80 inches).

The super king size bed is the largest bed widely available, and only the emperor size is larger. In the UK, super king size beds measure at 72 x 78  or 6 by 6.5 feet.

A mounting board, also known as foam core, is a stiff board composed of lightweight foam sandwiched between two layers of paper. The first is to preserve works on paper such as posters, prints, photographs, and watercolors by providing a stiff surface against which the artwork sits. This helps prevent the curling and warping of delicate paper.

A standard king size bed frame measures 76 inches wide by 80 inches long. A California king size mattress measures 72 inches wide and 85 inches long, making it five inches longer but four inches narrower than a standard king size mattress.

A standard double bed is 4 feet 6 inches wide and 6 feet 3 inches long (137 x 190 cm). This is the most common and widely available size for all bed types in the UK. A standard king size bed is 5 feet wide and 6 feet 6 inches long (150 x 198 cm).