Black Projector Mount Extender Extension Adaptor for Brand VideoSecu Projector Mount W52
It will extend 2.5 inch longer than the standard contain extender (3 inch). Total extension is 5.5 inch. By using this set of extenders, your projector mount can cover an area up to 17 inch in diameter. Notice: It only works for VideoSecu brand projector mount PJ2B. Other brand projector mount may not fit.