Channel Width sets the width for each frequency band of the Wi-Fi radios.

• 20 MHz is the base channel width, but multiple channels may be bonded together to increase data rates and throughput.

• 2.4 GHz should almost always be set to 20 MHz.
  • There is not enough space in the 2.4 GHz spectrum to reliably use 40 MHz channels, especially with multiple APs.

• 5 GHz can be set to 20, 40, 80, or 160 MHz.
  • A higher setting value will provide a higher throughput.
    • Some clients may not fully support 160 MHz channels in 5 GHz, which requires DFS.
  • A lower setting value will support higher client density.

• 6 GHz can safely be set to 80 or 160 MHz.
  • There is a lot of available spectrum for wide channels, and no requirement for DFS (Dynamic frequency selection) or AFC (Automated Frequency Coordination).