Use cases of the Shower tray trap, chrome 50 Alcaplast (A471CR-50): To drain water from shower trays. For shower trays with Ø50 mm drain hole. Features of the siphon for shower tray, chrome 50 Alcaplast (A471CR-50): Self-cleaning siphon construction. Lowered construction height 65 mm. Material: polypropylene, heat and chemical resistant.