Disable Left Side Bar on Supplier and Manufacturer Page

[dresson]

Hello, 

I was wondering how I can disable the left side bar on the manufacturer and supplier list pages:

https://www.dress-on.it/en/boutiques

https://www.dress-on.it/designer

But keep them on the single manufacturer and supplier pages:

https://www.dress-on.it/en/913_-s-max-mara

I have enabled them on the theme advanced preferences because I need them on the single manufacturer and supplier page, but not on the main list page. 

Tried hiding them with css but it works on all, not just the list page.

Can somebody help?

Thanks!