Problem with product width

Hi, I have a problem with the width of the products when I use the filters, I have full width in the store but when using the filters are made the smaller icons creating as an empty column on one side, I show you an image of the problem, How could I solve it? a greeting.

<img src=”https://www.dropbox.com/s/8dgm41k3i4b691y/Captura%20de%20pantalla%202017-01-29%20a%20las%2018.03.10.png?dl=0&#8243; alt=”
Problem product width” />