Trunking is a system used to contain wires and/or cables, or sometimes plastic pneumatic air tubes or hydraulic tubing. Trunking is a system used to contain wires and/or cables, or sometimes plastic pneumatic air tubes or hydraulic tubing.

Cable trunking is an enclosure usually with a rectangular cross section, and with one removable or hinged side, that is used to protect cables and provide space for other electrical equipment. They make electrical ducting and cable trunking for concealing and securing cabling.