This solid brass basin waste is designed for commercial installations where safety & security are essential. Designed to prevent obstruction to the water flow without allowing large objects to enter the drainage system, this grille waste does not allow the fitting of a plug, nor does it allow the flow of water to be halted resulting in a reservoir build up of water. ideal to be used as an anti vandal waste, this item has no mechanism or moving parts, nor any way of blocking the flow, thus preventing anyone breaking it or leaving the basin to overflow by leaving the plug in. This waste is a must for any disabled bathroom installation.