Slope 45 6 x 4 Double

This part has at least two variants that differ in the support structures found around four of the underside bars. Older versions of the part have supports that run all the way to the bottom of those four bars which prevent hollow stud connections at those points. However, newer versions of the part have supports which stop before reaching the bottom of those same four bars, thus allowing hollow stud connections on all underside bars. This difference can be seen in the additional large images.