Do Why does the picture show and the directions refer to a white adjustment when there isn't one? Is 600 watts required to eliminate flickering?

Hello, Yes the picture on the Lowe's website is of our Eaton SAL06P2 slide dimmer, that had both wheels black(dimming adjustment) and white(rapid start). The SAL06P3 has eliminated the rapid start and just uses a PRESET. No you cannot put 600Watts of LED load on this dimmer. The SAL06P3 can only handle 300Watts of dimmable LED lights. Now I can suggest our new Universal Slide dimmer with a micro processor in it part # SUL06P. It is more compatible with more LED bulbs and fixtures.