I replace a Panasonic pt-ax100u with a Epson 8350 due to the iris issue and lamp finally go out -lrb- after 8,500 hour on the bulb -rrb- . I find the Epson a decent replacement . I also need to change the ceiling mount as the mount be specifically weld for the Panasonic . after research -lrb- obviously not enough -rrb- I decide to buy the Atdec universal ceiling mount . the Epson have five hole configure for ceiling mount which the Atdec can handle . I can not attach all five -lrb- or even four with the extension arm include in the box . if anyone would be willing to sell the longest arm -lrb- 2 x 150mm -rrb- I would be able to fully install the Atdec ceiling mount . I have do a half heart search through scrap metal that I have in the garage but have not find anything yet . my next step will be to visit hardware store in search of a diy installation . please let I know if you have the longest arm leave over after install you ceiling mount . the unit appear easy to mount and feel very solid .