The 34560-184 is a horizontal rail from nVent SCHROFF, designed for use with subracks. It features an 84 HP width, 432 mm depth, and is made from anodized aluminum.
Schroff 34560284 is a heavy-duty horizontal rail (type H-KD) with a short lip, 84 HP width, 431.8 mm length, aluminum extrusion with anodized finish and conductive contact surface.