Can I select 80mhz channel for 5ghz on C7000

[fnunez]

I currently have set the router with Optimum as my IPS. 

I was wondering if there is a possibility to be able to set up the 5Ghz channel to 155.

Currently I have it set to 161 which falls on 20Mhz. 

When I access the router's setting through netgear genie (using the default 192.168.0.1) and going to wireless settings for the 5Ghz channels the only availability on UNII-3 are channels on 20Mhz (149, 153, 157 and 161).

I'm trying to set it up the channel on a wider channel (80mhz which is available on channel 155) but on the drop down menu of channel selection, it does not appear there. 

[plemans]

I'm not sure if you understand how it works. 

It channel overlaps. If you have it set to channel 161, it overlaps from channel 149-161. 

What sets your channel width is the "up to ****" speed. 

If you have it set on "up to 1300mbps" its using 80hz wide channels.