Airstream Tri-Mark Bolt for Main Door Lock with Deadbolt, Left Hand - 453851Airstream Tri Mark Bolt for Main Door Lock with Deadbolt, Left Hand 453851 for Airstream Chrome Entrance Main Door Lock Handle without Deadbolt, Left Hand 381547 01 For Airstream main door with the door hinge on the LEFT as you face the door from the outside of the trailer. For Airstream trailers built before 8 31 2001. For Airstream trailers built after 8 31 2001 use Airstream Black Inside Plate for Main Door Lock Handle, Left Hand 381547 07