What's a hybrid keder frame tent? Think of this tent option as a middle ground between a standard frame tent and Clearspan. This tent option incorporates a keder rail within the frame poles, which the tent top and sidewalls can easily slide into. Unlike traditional sidewalls, these kedered sidewalls create a tight seal against each side pole. When closed, these sidewalls offer amazing protection from the outside elements and conveniently open like curtains when not in use, creating a draping effect.