- 1). Place your mailbox in the desired location on the porch railing. Pencil a line onto the railing at the front and back of your mailbox. Put the mailbox aside.
- 2). Position the "L" brackets along the sides of your porch railing in a way that will support the bottom of the mailbox on the top of each bracket. Mark the "L" bracket screw-hole locations with a pencil. Set the brackets aside.
- 3). Screw each "L" bracket into the sides of your porch railing while using the screw-hole marks as a guide.
- 4). Mix the two-part JB welding glue according to package directions. Dab the welding glue on top of the "L" brackets. Place mailbox on top of the "L" bracket supports.
- 5). Open the door to the mailbox. Fill the mailbox interior with bricks or other heavy items to help the glue to set in a very firm manner.
- 6). Remove the bricks or heavy objects from the mailbox after 24 hours.
- 7). Remove the mailbox from the porch railing by unscrewing the "L" brackets when it is time to install a new mailbox.
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