It is there, in line 6.
Code:
{if $usertype eq "C" and $config.Appearance.products_per_row ne "" and $config.Appearance.products_per_row gt 0 and $config.Appearance.products_per_row lte 5 and ($featured eq "Y" or $config.Appearance.featured_only_multicolumn eq "N")}
{include file="customer/main/products_t.tpl" products=$products}