How to prevent custom roles from seeing Posts and Pages?

Hi. I created a custom role "Architect", and customize the role so it is only allowed access to limited areas of the wp admin. I understand that I must allow the custom role access to "pages" so it can create and edit products. However, it can also access the "Pages" menu. I don't want it to see this item, only "Products". Please see screenshot:
http://fevaag.no/hustegninger/page-menu-item.jpg