Shower Waste Pump Assembly with Tiled Floor Gully: Suitable for use in wet room environments. Extracts up to 12 litres/minute. The gully is 116 mm in diameter and 83 mm deep. Shower Waste Pump Assembly with Sheet Vinyl Floor Gully: Suitable for use with level access flooring. Extracts up to 12 litres/minute. The gully is 116 mm in diameter and 83 mm deep Shower Waste Pump Assembly with 90mm Shower Tray Gully: Suitable for use with a low level shower tray. Extracts up to 12 litres/minute. The gully is 90 mm in diameter and 77 mm deep. Shower Waste Pump Assembly with 52mm Shower Tray Gully: Suitable for use with a traditional step in shower tray. Extracts up to 9 litres/min. The gully is 52 mm in diameter and 90 mm deep.