The baskets are structures composed of electro-welded vertical drawn rods, with spacers, in A-36 or stainless steel, depending on the need, protected with paint, to withstand chemical attacks and aggressive environments. The upper part of the inlet is composed of a venturi, to multiply the cleaning air and a flange to protect the sleeve fixing spring. In the lower part there is a metallic disk (mirror) to avoid breakage of the textile material.