This gully trap comes with grating. It has a dimension of 430 x 330 x 340mm (L x W x H).
The wastewater from the sink is connected to a gully trap before emptying into the sewer. A gully trap is a basin in the ground with a water seal to prevent foul odours of the sewer from reaching the surface. Gully traps are buried in the ground with the top or surround raised above ground level. This is to prevent groundwater from entering the sewer.