The Bestar Pur Full Murphy bed with shelving unit (84W) is the ideal space saver for a multipurpose room. The bed folds up and down smoothly and accommodates most standard Full mattresses. The complementary shelving unit comes with 2 fixed and 3 adjustable shelves to hold your belongings. The dual-mount wall bed mechanism attaches to the floor and wall for maximum stability and durability. To avoid risk of injury, the bed must be installed to wall and floor structure by a professional or qualified person. Two people are required for assembly. Installation requires attachment to wood studs or masonry, removal of the baseboard, and drilling into the floor. Necessary hardware is included. Do not use this product for children or pets under 50 pounds (22.7 kg). This bundle is backed by the Bestar 10-Year Manufacturer’s Warranty. North American made with globally sourced materials. Features If a queen-sized bed is purchased the top of the bed and the bookshelves will not be even (level) with each other as the bookshelf stays the same size even if the queen-size Murphy bed is purchased. To avoid the risk of injury, the bed must be installed on the wall and floor structure by a professional or qualified person; two people are required for assembly Dual-mount wall bed mechanism attaches to the floor and wall for ease of assembly and maximum stability and durability Do not use this product for children or pets under 50 pounds (22.7 kg); the maximum weight supported with a mattress is 1000 pounds (453.6 kg) Murphy bed accommodates most standard Full mattresses (8-10 inches thick, 60-90 lb, 54 x 75 inches, no futons) to let you choose the most comfortable option (mattress not included, do not use with box spring) The dual piston system allows you to fold the Murphy bed up and down smoothly and quickly; mattress support uses flexible slats that follow the curves of the body and absorb pressure for maximum comfort Durable steel wall bed frame and laminated engineered wood cabinet with leg levelers; minimum ceiling height of the anchoring wall is 86.4 inches The shelving unit features 2 fixed shelves and 3 adjustable/removable shelves to accommodate items of various sizes Shaker-inspired trim and metal handles for transitional styling that complement any decor Backed by the Bestar 10-Year Manufacturer’s Warranty; North American made with globally sourced materials Bundle includes: 59W Full Murphy Bed and 25W Storage Unit Bundle includes: 59W Full Murphy Bed and 25W Storage Unit The maximum weight of the mattress for a queen-size bed is 90 pounds. As long as the mattress is no more than 12 inches, more than 60 pounds, and is firm enough that it doesn't sag you should be all right. Those are the 3 guidelines for a queen-size mattress. The available maximum space when the bed is closed is 12 inches.