the grid results page is designed to show a total of nine records in the 3 columns.
to change this, so it will show 30 in 5 columns,
edit the webassist/plugins/catalog/results_grid.php file.
change the following line:
$maxRows_WADAProducts = 9;
to:
$maxRows_WADAProducts = 30;
and change this line:
<div class="contentBoxGrid ps_main borderColor<?php echo(($prodCount%3 == 0)?" thirdBox":""); ?>">
to:
<div class="contentBoxGrid ps_main borderColor<?php echo(($prodCount%5 == 0)?" thirdBox":""); ?>">