Single filter (category) portfolio page layout

[FrozenMe]

Hello Minti staff,
I’d like to display each single category/filter portfolio page like the general portfolio one:
http://unicon.mintithemes.com/portfolio-page/portfolio-4-columns/

Here is what I get (which is basically identical to the blog page layout):
http://www.bscastucci.com/wp/it/portfolio_filter/marmotte/
(password: “123stella”)

Any suggestions? Thank you!
Daniele

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