Designing A Facebook Fan Page

Demensions for designing a Facebook fan page

Width

Facebook fan pages must fit within a container set to a width of 520px.

Design for Any Height

Facebook pages can have any height, but you should know that most people interact above the fold, and the Facebook landing page will start 135px from the top if you arelogged in
If not logged in to Facebook than the top space is about 250px which allows to log in or sign up.

Call to Action

Since we want to create a call to action for our Like button, we must take the location of the company name into account.
The Like button appears right of the company name at the top of the landing page.
To point to the Like button, you need to know the pixels from the left of the landing page to the start of the Like button.