<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt"><div></div><div class="yahoo_quoted" style="display: block;"><div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 10pt;" class="yui_3_13_0_ym1_1_1389870624118_4653"><div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;" class="yui_3_13_0_ym1_1_1389870624118_4654"><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"><div class="y_msg_container"><br></div> </blockquote> </div> </div> </div> <style><!--
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--></style><span>You're right that there are two types of compression connectors. I think the rain tight ones have an extra piece near the compression ring. At Home Depot, I believe the rain tight ones are blue and they cost a little more. See the Halex catalog:</span><div></div><div><span><br></span></div><div><span>http://www.halexco.com/products.cfm?siteSection=consumer&product_subgroup=cc&product_group=EMT<br></span></div><div><span><br></span></div><div><span>Jeffrey Quackenbush</span></div></div></body></html>