Installation Guide

Decorative Mailbox Posts – 4800 Series
In-Ground Mounted Post Installation Instructions
Installing the In-Ground Mounted Post for the Mailbox
Into Concrete
When you install a curbside or rural mailbox, make sure that it is
easily accessible to the mail carrier. By regulation it should be 41” to
45” from the ground or street surface up to the inside floor of the
mailbox. The door should be set back 6” to 8” back from the front
face of the curb or the road edge. However, you should check with
your local postmaster to ensure that the mailbox is installed
according to local regulations.
Dig the hole for the concrete footing, and prepare the concrete. You
will need approximately 4-1/2 cubic feet. The top surface of the
footing should be about 12” by 18” and extend 36” into the ground.
See the illustration for the relative position of the rectangular footing
to the post and mailbox. The bottom of the hole for the concrete
footing should be filled with about 6” of gravel to promote drainage
under the post. The top of the footing should be sloped for water
runoff.
The concrete must be below the frost line. Otherwise the post will
move when the ground freezes. Be careful not to puncture water,
sewer, or gas lines when digging holes for footing.
Set the post in the hole and fill the hole with the prepared concrete
mix. Prod the mix with a stick while filling to reduce any air pockets.
If you want to conceal the concrete, pour it to within a few inches of
the top of the hole and cover with soil after the concrete has set. Use
a carpenter’s level on the sides of the post to ensure that the post is
aligned vertically. Periodically check the vertical alignment of the
post as the concrete is curing.
SALSBURY INDUSTRIES
1010 East 62
nd
Street, Los Angeles, CA 90001-1598
Phone: [phone] Int’l Phone: [phone]
Fax: [phone] Int’l Fax: [phone]
Installation instructions are provided as general guidelines. It is advised that a professional installer be consulted. Salsbury Industries assumes no product assembly or installation liability.
Copyright © 2010 Salsbury Industries. All rights reserved.