HIGH QUALITY DURABLE BED FRAMES WITH SMOOTH FINGER-LIGHT LOWERING AND RAISINGManufactured by Wall Bed King, these wall beds are made and designed to the most rigorous specifications of safety, durability and quality. The pull down and fold away mechanism is powered by a German engineered gas piston system that is extremely durable and more reliable than out-dated spring mechanisms that suffer from metal fatigue and require maintenance over time. Rigorous testing has revealed that the gas piston system remains in excellent condition, even after hundreds and thousands of retractions and compressions.USE ANY MATTRESS OF YOUR CHOOSINGThe listing is for a flat-packed, full wall bed mechanism without a mattress – allowing you to use any mattress of your choosing, with a thickness of up to 12 inches (30cm). Simply ensure to order the correct sized wall bed frame for your chosen mattress.Your mattress will be supported by the strongest, heavy-duty, heat-treated beech bed slats; allowing good air circulation while providing robust support for all types of mattresses, including any type of pocket sprung, coil sprung, foam, gel or latex mattresses regardless of weight. The mattress and bedding can be left on the bed at all times whether in a lowered or raised position, meaning bedding will only need to be removed for washing, as on a standard Bed.Easy Installation ProcessThe product will arrive flat packed and ready for easy assembly and installation. The assembly and installation process has been designed to be as simple and user friendly as possible and we provide an instructional video to walk you through each step.Studio Vertical KING Wall bed 150cm x 200cm dimensions:5ft x 6ft 6in ( 150cm x 200cm )Frame width : 162cmHeight when folded up : 216cmDepth when folded up : 41cmProjection when folded down : 231cmMaximum mattress depth : 30cm.