Valsir PP3 PP Polypropylene Concentric Reduction for plug-in drain pipes with the following features: Diameter 1: 110 mm Diameter 2: 90 mm Nominal diameter 1: 100 mm Nominal diameter 2: 90 mm Length: 133 mm Weight: 116 grams Valsir PP3 is the drainage system consisting of pipes, fittings and accessories for the construction of drainage and pluvial drainage systems. Concentric reduction involves widening or narrowing the pipe section identically to the as