All of our drainage, grate and gully products are designed by our own R&D team and manufactured by Impey, specifically for Impey Decs. Our drainage options have a height adjustable stainless steel top, suitable for floor tiles 6mm-26mm deep. All Aqua-Dec EasyFit® and Aqua-Grade floor formers are supplied as standard with the UTT01/H tiled floor gully with a horizontal outlet (vertical outlets available on request) - a high quality water trap featuring a 50mm water seal and 43mm outlet.