Surface channels serve multiple purposes, including: Providing a protective housing: The channel acts as a protective casing for the LED strip, shielding it from dust, debris, and physical damage. Heat dissipation: Surface channels often have designs that help dissipate heat generated by the LED strip, ensuring optimal performance and extending the lifespan of the lighting system. Diffusing light: The channel comes with a diffuser cover that helps distribute and soften the light output, reducing glare and creating a more even illumination. Concealing wiring: Surface channels can hide the wiring and electrical connections, resulting in a neater and more aesthetically pleasing installation. The use of surface channels is common in architectural lighting applications, interior design, and various commercial and residential lighting projects. They offer a discreet and stylish way to incorporate LED lighting into different spaces, making them a popular choice for modern lighting solutions. Size: 17.5mm x 7mm x 3000mm Installation: Simply stick the LED strip light's adhesive backing inside the channel, snap on the diffuser cover, and mount the channel where ever desired. Please note when ordering these channels for delivery they will be cut in half to accommodate courier restrictions.