The Center Boxes are located in the:
/includes/modules
example:
/includes/modules/featured_products.php
You can use your templates and overrides to customize this:
/includes/modules/your_template_dir/featured_products.php
and add the Free Shipping Icon if you want to see it ...
One method to change the code to show the Free Shipping icon in the Featured Products Centerbox is to use:
Code:
$list_box_contents[$row][$col] = array('params' =>'class="centerBoxContentsFeatured centeredContent back"' . ' ' . 'style="width:' . $col_width . '%;"',
'text' => (($featured_products->fields['products_image'] == '' and PRODUCTS_IMAGE_NO_IMAGE_STATUS == 0) ? '' : '<a href="' . zen_href_link(zen_get_info_page($featured_products->fields['products_id']), 'cPath=' . $productsInCategory[$featured_products->fields['products_id']] . '&products_id=' . $featured_products->fields['products_id']) . '">' . zen_image(DIR_WS_IMAGES . $featured_products->fields['products_image'], $featured_products->fields['products_name'], IMAGE_FEATURED_PRODUCTS_LISTING_WIDTH, IMAGE_FEATURED_PRODUCTS_LISTING_HEIGHT) . '</a><br />') . '<a href="' . zen_href_link(zen_get_info_page($featured_products->fields['products_id']), 'cPath=' . $productsInCategory[$featured_products->fields['products_id']] . '&products_id=' . $featured_products->fields['products_id']) . '">' . $featured_products->fields['products_name'] . '</a><br />' . $products_price . '<br>' . (zen_products_lookup($featured_products->fields['products_id'], 'product_is_always_free_shipping') ? TEXT_PRODUCT_FREE_SHIPPING_ICON : ''));