The 184-10078 is a 40 x 40mm grey Wiring Duct/Cable Trunking made of polyvinylchloride (hard PVC). This T1-E-40X40 open mount trunking for use with T1-E and T1-EF narrow slots. Due to the thinner "fingers" and narrower slots, the T1E wiring duct is especially suitable for small cables used in electric and electronic cabinets. The fingers are very flexible, which allows for repeated opening and closing when wiring with no risk of breakage, even at low temperatures.