This product is either discontinued or we cannot get that from suppliers.
TGC-03A-PRO, Extendable to 38" depth, Thickness 19.7 / 23.6" (L) x 1.79"(H) x 0.5", Included Standard screws #10-32 & Metric screws M4x6, M5x12.
TGC Rack Mountable Server Case Metal Slide Rails for TGC-4824 / 416B / 215N Chassis.