cabling - What is the official name for wiring hole stops/plugs and where can I buy them? - Home Improvement Stack Exchange
Amazon.com: Quality Clever PivyCord-V Flex Chain Raceway Cable Management Solution for Sit-Stand Variable Height Desks, Flexible Cable Raceway to Hide, Organize and Protect Wires and Cablest, Black : Electronics
Electriduct 2" x 2" Open Slot Wire Duct Raceway - Stick Length: 6.56 Feet - White - 25 Pack - Walmart.com
Cable Management | Raceway and Wiring Duct | ShowMeCables.com