The SPF Triangular Slipbase Housing is unique in comparison to other slipbase housings because:
Sign posts do not loosen or rotate within the SPF housing – the clamping bolts do not loosen with time they are not in direct contact with the sign post
SPF housings do not affect the structural integrity of sign posts – the housing maintains full contact all the way around the sign post, decreasing the force on the post per unit surface area
One wrench size installs the SPF housing – the two clamping bolts and the three bolts used to bolt the housing to the ground stub are all the same size
SPF housings are purchased as a kit, including all parts needed to attach the post to the stub – for kit contents, see “What the Kit Contains”
SPF housings can be used as either a sign post housing or a ground stub when inverted and 2 1/2” X 36” Schedule 80 pipe is inserted and concreted into the ground
SPF housings are made of steel, not ductile cast iron
SPF housings contain no threads, eliminating the possibility of thread failure
Easier to install than other designs – SPF housings can be mounted on the ground stub before the sign post is installed
