what is a pattress
A pattress or pattress box is the container for the space behind electrical fittings such as power outlet sockets and light switches. Pattresses may be designed for either surface mounting (with cabling running along the wall surface) or for embedding in the wall or skirting board.lthough cables may be joined inside pattress boxes, due simply to their presence at convenient points in the wiring, their main purpose is to accommodate switches and sockets. They allow switches and sockets to be recessed into the wall for a better appearance.