MRC:
The means used in attaching the item to the item supported.AXMW
Attachment To Item Supported Method:
Holds item by means of formed indentations along length: one is 29.375 in. Lg by 0.562 in. W by 0.250 in deep, another is 29.375 in. Lg by 0.188 in. W by 0.250 in deep
MRC:
The means used in attaching the item to a supporting object or surface.AXMX
Supporting Object/surface Attachment Method:
Four 0.0625 in. Diameter mtg holes, on single side, two each end at 0.250 in. And 0.875 in. From ends