Extra div... where is it coming from

I have an extra div with the class grid-9 getting rendered and wrapped around my content area. I am not using any tpl files other than omegas, Provide full width wrapper around this zone is unchecked, and I can't tell where it is coming from. It is messing up my fluid layout. Any suggestions? The theme is from symphonythemes the conch theme.

  <section id="section-content" class="section section-content">
    <div id="zone-content" class="zone zone-content clearfix container-16">    
    -> this one <div class="grid-9 region region-content contextual-links-region" id="region-content">