Sofa bed mattresses are a slightly different size compared to their regular mattress counterparts. The key difference is the depth (or length), which is typically shorter on a sleeper mattress. The difference isn’t huge, but it’s worth noting that some bed sheets designed for a regular mattress might not fit on a sleeper. Here are the different sizes:
Queen Size Sleeper Mattress: 60″w x 72″d
Queen Size Mattress: 60″w x 80″d
Full Size Sleeper Sofa Mattress: 52″w x 72″d
Full Size Mattress: 54″w x 75″d
Twin Size Sleeper Sofa Mattress: 38″w x 72″d
Twin Size Mattress: 39″w x 75″d