Item 42607c01
http://brickowl.com/catalog/lego-wedge-plate-6-x-12-x-1-cut-corners-with-2-fixed-rotatable-pins-42607c01#editIs uneditable. I am told to edit the parent part. When I click the hotlink for the parent part it takes me to the same part. I'm not sure whether the fixed pins are truly removable without damage but if so then a part 42607 without pins would be required. The assembly is larger than the wedge itself by about 8mm, the distance of the pins sticking out.
Haven't run across others yet but can't imagine there would be many more.
Brian
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