Pattress boxes are designed to be used where installation within the wall is not possible or desired. This means that surface mounted boxes are required to install wiring devices, which can result in less labour and mess as the walls do not need to be chased or chiselled. Specification: Colour: White Item Dimensions: H 76mm x W 152mm Installation: By qualified personnel Material: PVC Application: Used in the wiring and fitting of switches and sockets.