25 50 Ports Cat3 Wiring Rack is constructed from premium cold rolled steel for sturdy sturdiness and long-term durability. For maximum protection against oxidation, we added a black coating to the outside of this terminal block. Its contacts are phosphor bronze and tin/silver/gold plated, which ensures the conductivity of the multi-plug. The 25 50 Ports Cat3 Wiring Rack fits any standard 19" rack, server cabinet to organize cables, which not only makes installation and maintenance easy
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