FDL is a festoon provision – it is less electrical or cover which is supplied by the installer as they must choose from the many duplex receptacle or switch options along with the myriad of covers available.
Field installable boxes are available that require a small hole be drilled for wiring and surface mounting, this is not the same as a festoon provision and is done by the installer, not the factory. They are available with and without electrical.
Attached are some details of festoons and hand holes. The hand hole is always side A and is 18” above pole base. There has to be at least a 12” separation from the hand hole to the festoon to provide for clearance of the reinforcement rims and to maintain the structural integrity of the pole by not removing too much material too close together.