I have my Oppo DBP-83 rack mounted in a Middle Atlantic raack...Middle Atlantic makes a shelf and faceplate combination that works very very well and, as luck would have it, the 93 will fit in the same faceplate / shelf as the 83...

HTH...

Audio: Triad Monitor Golds, Surround Golds, Silver Subwoofers; Procella P-18 Subwoofer; QSC DCA 16622s, 1644, 3422, BASIS 922uz; ADA MACH IV B
Other: APC S-15s; Crestron
Sources and Video: Ran out of characters .....................