I have several canabalized DS10L's that are equipped with ears that allow them to be mounted in an EIA Standard 19 inch rack. If these ears will meet your requirement; it will be the work of moments to remove them from the empty chassis and ship two pairs of ears (plus hardware) to any location where you need them.
The first time I attempted to send a digital image of the ears (quite sturdy items) but some mail server rejected that effort.
Please let me know if you want them.
bohrer1 hughes net