Siphon for Alcadrain double sink with steel grid Accessory for connecting sanitary appliances (washing machine, dishwasher or sink depending on model). Complete set with suitable threads for reliable DIY installation. Product sheet; Model. Waschbecken; Fitting size in inches. 1 1/2; Colour. White ; EAN barcodes. ; Typical use: Alcaplast Dubb. Siphon 40-50MM With Sieve.