The following applies for the promo "LIMITED TIME OFFER - FLAT RATE SHIPPING WITHIN CONTIGUOUS U.S. $10.95*"
The contiguous United States consists of the 48 adjoining U.S. states plus Washington, D.C., on the continent of North America. The flat rate shipping offer excludes the non-contiguous states of Alaska and Hawaii and all off-shore United States territories (American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the US Virgin Islands).
EXCLUDES BumperBlocker products
Since DoorShox uses rare earth magnets to attach to your vehicle's doors it will only work with steel.
To check to see whether or not your doors will be compatible with DoorShox simply try putting a kitchen magnet (I.E. refrigerator magnet) near your door.
If you feel the magnet pulling DoorShox will work fine. If the magnet is not attracted to the door than it means your doors are Aluminum and DoorShox will not work.