Combining two standard Full-size mattresses creates a substantial, non-standard sleeping area. This configuration results in an extra-wide surface that can comfortably accommodate multiple sleepers, pets, or children who share the bed. The resulting dimensions are significantly larger than most common mattress sizes, offering a unique solution for those seeking maximum width without moving to specialized, custom-order beds.
Defining the Resulting Dimensions
A standard Full-size mattress, also referred to as a Double, measures 54 inches in width and 75 inches in length. When two of these mattresses are placed side-by-side, the length remains the same, but the width is exactly doubled. The resulting dimensions of the combined sleeping surface are 108 inches wide by 75 inches long. This width of 108 inches is substantial, providing a surface that is nine feet across. The length of 75 inches is the same as a standard Full or Twin mattress, which is shorter than most modern Queen and King mattresses.
Comparison to Standard Mattress Sizes
The 108-inch by 75-inch size is not a common industry standard, but its dimensions offer a direct comparison to the largest available beds. A standard King mattress measures 76 inches wide by 80 inches long, making the combined Full size 32 inches wider but 5 inches shorter. The California King, which is the longest standard size, measures 72 inches wide by 84 inches long, meaning the combined Full is 36 inches wider but 9 inches shorter.
The combined Full size is sometimes informally placed in the category of “oversized” or “family beds.” It achieves the same 108-inch width as an Alaskan King mattress, the largest non-standard size commonly available, though the Alaskan King is a perfect square at 108 inches long. This configuration is exceptionally wide but lacks the extra length preferred by taller individuals. Custom bedding companies sometimes refer to this configuration as the “Two Full Beds Pushed Together” size.
Practical Considerations for Combining Beds
Securing the Mattresses
Securing the two mattresses is a necessary consideration to prevent them from separating during use. This can be accomplished with a large platform frame or two separate frames positioned tightly together. Using a non-slip pad or an adjustable strap system placed around both mattresses can help maintain alignment and prevent shifting.
Bridging the Gap
To eliminate the gap between the two mattresses, a foam bed bridge or a mattress connector is commonly used. This is a piece of foam placed in the seam to create a smooth, continuous surface. An additional step involves covering both mattresses and the bridge with a single mattress topper before placing a fitted sheet over the entire assembly.
Bedding Challenges
Bedding for a 108-inch wide surface is the most challenging logistical hurdle, as standard fitted sheets will not fit this size. Some specialty retailers offer sheets specifically for this “Two Full Beds Pushed Together” dimension. Alternatively, a flat sheet designed for a standard King size is 108 inches wide, which can be turned sideways and used as a fitted sheet in some cases.
The immense width of 108 inches, which is nine feet, also requires a significantly large room to allow for comfortable movement around the bed. For a bed of this size, a bedroom measuring at least 12 feet by 12 feet is generally recommended to ensure adequate walking space and room for other furniture.