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An extra long twin mattress is 39 inches in width and 80 inches in length. A traditional twin mattress is five inches shorter at 75 inches in length. More »

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A standard twin mattress is 38 inches wide by 75 inches long. A twin XL, or extra-long twin mattress, is 38 inches wide and 80 inches long, according to The Bedding Experts. More »

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The difference between a twin mattress and an extra-long twin mattress is the extra-long mattress is 5 inches longer, states Sleep Experts. A twin mattress is 75 inches long by 39 inches wide, while an extra-long twin ma... More »

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To determine whether or not a twin mattress fits through a door, compare the measurements of the doorway plus any immediate clearance necessary with the length and width of the mattress. A typical twin size mattress meas... More »

www.reference.com Home & Garden Furniture Beds & Mattresses

According to online retailers, a standard twin-sized mattress from most manufacturers typically measures 75 inches in length and 39 inches in width. Commonly referred to as a "single," such mattresses are generally meant... More »

www.reference.com Home & Garden Furniture Beds & Mattresses

The mattress for a full bed is 54 by 75 inches, which is the same length as a twin bed but 15 inches wider. A twin bed gives a sleeper the minimum required sleeping space. A full bed provides an individual a more comfort... More »

www.reference.com Home & Garden Furniture Beds & Mattresses

A standard twin-sized mattress measures 39 inches in width by 75 inches in length. Some manufacturers list standard twin-sized mattresses at 38 inches in width. Twin-sized mattresses, sometimes called single mattresses, ... More »

www.reference.com Home & Garden Furniture Beds & Mattresses