How Big Is a Double Sofa Bed? Standard UK Sizes Explained

Sofa bed dimensions are rarely as straightforward as the name suggests, and the word double can describe two quite different sleeping areas depending on the frame. This guide sets out the standard UK bed sizes, explains what a double sofa bed measures both closed and open, and shows why the open footprint is the number that catches most buyers out. We look at typical widths for two and three seater frames, how arm design quietly adds centimetres you may not have, and the clearances that keep a room walkable once the bed is made up. There is also practical guidance on mattress depth, slatted bases and toppers, along with a delivery route checklist covering doorways, stair turns and hallway corners so the sofa actually reaches the room you bought it for. A short checklist at the end gathers the eight figures you need before ordering, which takes around ten minutes to complete and removes almost every common problem people have with convertible furniture....