The Flat Pipe Holder is used when pipe pilings
are driven to stabilize a dock section.  
The pipe pilings fit inside the pipe holder and
allow the dock to float up and down. 
A Flat Pipe Holder Backing Plate is recommended
to distribute the forces placed on the Flat Pipe Holder
Use a 2-1/2-Inch Holder with a 2-Inch Pipe Piling
Use a 3-Inch Holder with a 2-1/2-Inch Pipe Piling
Pipe holder brackets are designed to be fastened
with 1/2-inch carriage bolts