This lath floor provides suspension, allows the mattress to ventilate, and can be designed to be vertically adjustable in order to elevate the legs and / or the torso. The springs have mostly been replaced by pre-bent wooden slats (usually glued laminated timber made from beech or birch) which are joined to the outer wooden frame by some form of flexible rubber bolt, shoe or socket. In Europe, wooden frames with a middle section consisting of springs held in place by wire (to be put into the wooden bedframe as a unit) used to be the standard for most of the 20th century. This is often why box springs and mattresses are matched and sold in pairs.īox-spring beds are especially popular in North America and Western Europe.Īlternatively, in Japan, futon mattresses are usually either placed on a bedframe or on the floor, without the use of springs. Changing the thickness of the box spring and mattress require revisions to the mattress and box spring coil stiffness. Standard "high profile" box springs are 9 inches (23 cm) in height, whereas "low profile" box springs are between 5 and 5.5 inches (13 and 14 cm). With the increasing height of mattresses, manufacturers now make box springs in different heights so that the mattress and box spring pair maintain a standard height. The newest design in box-springs is the folding box spring made of wood or metal, then covered in fabric which can fold in half and can be sent by shipping and courier companies. Wood makes a better support system for the newer memory foam and latex mattresses. More and more box-springs are being made out of wood, then covered in fabrics. The first rectangular spring-cushioned wire frames to support mattresses did not have wood rims or cloth covers.
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