To provide a housing type side fence capable of satisfying a specification reference in the fence and capable of restraining the lowest height of the bottom.

In this housing type side fence 13 on the side of a headboard 11, a column part 16 is composed of a pair of stays 16a and 16b arranged in a parallel link shape, and the base end side of these stays 16a and 16b is rotatably installed on the back bottom 15a under the bottom. The stays 16a and 16b are composed of a closed loop-shaped pipe material so as to form an almost parallelogrammic closed space S inside. The closed space S is set to a dimension into which a head part of at least a user does not enter. In the stay 16a and the stay 16b, an interval (b) generated when standing up on the bottom is set not more than an interval under which a head cannot pass through.