We are a professional Decoration Solid Wiring Duct manufacturer Solid Wiring Duct (Solid Wiring Tray, Solid Trunking)Material: High impact, rigid, self-extinguish PVC. ... design,especially of anti-dust and mouse. Good for floor wiring to faciliate trolly pass and to avoid trip.Type: Round Wiring Duct, Slotted Wiring Duct, Sold Wiring Duct. Solid Wiring Duct