All meshes are manufactured DUREX ™ molded tapered openings.

The illustration shows a cross section of a mesh where one can see the vent in the opening, thereby the material passing through the top did not find resistance to move on significantly reducing the risk of incrustations and tamponade, and increasing efficiency.

The openings may be square, slotted (slot) and round, from 0.012 "to 8.000" in thickness from 1 / 2 "to 3"