public function getTotalNumOfBoxes($weight) { if (!Mage::getStoreConfig('shipping/shipusa/active')) { return Mage_Usa_Model_Shipping_Carrier_Fedex::getTotalNumOfBoxes($weight); } $this->_numBoxes = 1; // now set up with dimensional weights $weight = $this->convertWeightToLbs($weight); return $weight; }