Knief & Co. was founded in 1979 and has become a valued expert in the specialized building sector. In regard to freestanding bathtubs, Knief & Co has over 20 years experience in the special acrylic production. Aqua Plus® freestanding bathtubs range has the biggest diversity in designs. With its accumulate know-how and quality, Knief is recognized as the market leader for acrylic freestanding bathtubs made in Europe.

Aqua Plus® harmonically integrates into individually coordinated design concepts and spatial situations. With its extraordinarily varied design vocabulary, the collection presents itself in the categories modern designs, traditional designs, special designs and classic designs to accommodate individual preferences in style. Pleasing and fresh designs, linear or curved, symmetrical or asymmetrical, freestanding or installed…, they all create a unique and aesthetically coherent atmosphere.

With one of Knief & Co.’s Aqua Spa® bathtubs you have your wellness oasis always close at hand! Aqua Spa® is the epitope of pure design, functionality and processing quality. Revolutionary is that all Aqua Spa® wellness bathtubs keep their original, pure design. No parts are visible from the outside and the appearance of the original AquaPlus® bathtub is not changed.