diff --git a/src/Package.php b/src/Package.php
index 07414ce..b873fb1 100644
--- a/src/Package.php
+++ b/src/Package.php
@@ -2,52 +2,10 @@
 
 class Package
 {
-    const FEDEX_YOUR_PACKAGING = 'YOUR_PACKAGING';
-    const USPS_CONTAINER_RECTANGULAR = 'RECTANGULAR';
-    const USPS_SIZE_LARGE = 'LARGE';
-
     protected $weight;
     protected $width;
     protected $length;
     protected $height;
-    protected $packaging;
-    protected $size_classification;
-
-    /**
-     * @return mixed
-     */
-    public function getSizeClassification()
-    {
-        return $this->size_classification;
-    }
-
-    /**
-     * @param mixed $size_classification
-     * @return $this
-     */
-    public function setSizeClassification($size_classification)
-    {
-        $this->size_classification = $size_classification;
-        return $this;
-    }
-
-    /**
-     * @return mixed
-     */
-    public function getPackaging()
-    {
-        return $this->packaging;
-    }
-
-    /**
-     * @param mixed $packaging
-     * @return $this
-     */
-    public function setPackaging($packaging)
-    {
-        $this->packaging = $packaging;
-        return $this;
-    }
 
     /**
      * @return mixed
diff --git a/src/USPS/Rate.php b/src/USPS/Rate.php
index 48bcc95..48647b5 100644
--- a/src/USPS/Rate.php
+++ b/src/USPS/Rate.php
@@ -101,14 +101,35 @@ class Rate extends RateAdapter
 		foreach ($this->shipment->getPackages() as $p) {
 			$sequence_number++;
 
+			/**
+			 * RateV4Request / Package / Size
+			 required once
+			 Defined as follows:
+
+			 REGULAR: Package dimensions are 12’’ or less;
+			 LARGE: Any package dimension is larger than 12’’.
+
+			 For example: <Size>REGULAR</Size>
+			 string
+			 whiteSpace=collapse
+			 enumeration=LARGE
+			 enumeration=REGULAR
+
+			 */
+			if ($p->getWidth() > 12 or $p->getLength() > 12 or $p->getHeight() > 12) {
+				$size = 'LARGE';
+			} else {
+				$size = 'REGULAR';
+			}
+
 			$packages .= '<Package ID="' . $sequence_number .'">
 					<Service>ALL</Service>
 					<ZipOrigination>' . $this->shipment->getFromPostalCode() . '</ZipOrigination>
 					<ZipDestination>' . $this->shipment->getToPostalCode() . '</ZipDestination>
 					<Pounds>' . $p->getWeight() . '</Pounds>
 					<Ounces>0</Ounces>
-					<Container>' . $p->getPackaging() . '</Container>
-					<Size>' . $p->getSizeClassification() . '</Size>
+					<Container>RECTANGULAR</Container>
+					<Size>' . $size . '</Size>
 					<Width>' . $p->getWidth() . '</Width>
 					<Length>' . $p->getLength() . '</Length>
 					<Height>' . $p->getHeight() . '</Height>
diff --git a/tests/ShipTest.php b/tests/ShipTest.php
index 34c6e2c..ce42ffe 100644
--- a/tests/ShipTest.php
+++ b/tests/ShipTest.php
@@ -61,9 +61,7 @@ class ShipTest extends PHPUnit_Framework_TestCase
 		$p->setWeight(3)
 			->setWidth(9)
 			->setLength(9)
-			->setHeight(9)
-			->setPackaging(Package::USPS_CONTAINER_RECTANGULAR)
-			->setSizeClassification(Package::USPS_SIZE_LARGE);
+			->setHeight(9);
 
 		$s->addPackage($p);
 
@@ -107,11 +105,6 @@ class ShipTest extends PHPUnit_Framework_TestCase
 		$ship = Ship::factory($this->shipping_options);
 		$approved_codes = $ship->get_approved_codes('fedex');
 
-		$ps = $this->shipment->getPackages();
-		foreach ($ps as $p) {
-			$p->setPackaging(Package::FEDEX_YOUR_PACKAGING);
-		}
-
 		return [
 			'prod'           => FALSE,
 			'key'            => 'XXXX',