Box-spring - online puzzles

A box - spring (or divan in some countries ) is a type of bed base typically consisting of a sturdy wooden frame covered in cloth and containing springs. Usually the box - spring is placed on top of a wooden or metal bedframe that sits on the floor and acts as a brace, except in the UK where the divan is more often fitted with small casters. The box - spring is usually the same size as the much softer mattress that is placed on it. Working together, the box - spring and mattress (with optional bed frame) make up a bed. It is common to find a box - spring and mattress being used together without the support of a frame underneath, the box spring being mounted directly on casters standing on the floor.

The purpose of the box - spring is threefold:

to raise the mattress 's height, making it easier to get in and out of bed ;

to absorb shock and reduce wear to the mattress ; and

to create a flat and firm structure for the mattress to lie upon.

The first rectangular spring -cushioned wire frames to support mattresses did not have wood rims or cloth covers. These were called bedsprings. More and more box -springs are being made out of wood, then covered in fabrics. Wood makes a better support system for the newer memory foam and latex mattresses.