Remarks: This screen holder is a special patented design. It can easily be installed by the on the hard screen,tighten the set screws on the back of the screen holder and make any needed adjustments (see figure 1). This makes the overall screening action more effective. Operate is no build-up on the hard screen, the screen holder is too loose. In this case, re-tighten the screw at the back of the screen holder.
