Protects mattress and box springs during transit and / or storage. Please note that for King Size you will need to telescope two boxes toguether for mattress and also you will need two boxes for the set of box springs. Crib Mattress Box 27X5 1/2X52 (5) pcs per bundle Twin Mattress Box 39X7X75 (5) pcs per bundle Full Mattress Box 54X7X75 (5) pcs per bundle Queen Mattress Box 61X7X80 (5) pcs per bundle Kin/Queen/Split Universal/Combo Mattress Box 84X7 3/4X40 Telescope (2) pcs per set (5) set per bundle Pillow Top King/Queen Split Mattress Box (2) pcs per set (5) set per bundle