Wedge wire screen can with round support rods and rectangular support rods. 

The benfits of wedge wire screens is as the following:

Extended lifetime.

Slot during abrasive operation on the screen surface does not change.
Capability to withstand heavy loads.
High open area.
Less prone to clogging.
Perfectly smooth and flat surface.
High precision of execution Increased capacity and more precise separation.
Self-cleaning effect.
Low pressure loss.
Increased efficiency.
Permanence of exploited resources.Lower capital cost and maintenance.