<select class="filterSelection" name="pkw_width_filter">
              <?php foreach ($filterValues['pkw_width'] as $_filterItem): ?>
                <?php if (!$_filterItem->getValue())) { echo ' id="' . $_filterItem->getValue(). '"'; } ?>
                <option id="<?php echo $_filterItem->getValue() ?>"><?php echo $_filterItem->getValue() ?></option>
              <?php endforeach; ?>
            </select>