The PP350 and PP351 mounts were designed for outdoor use with small-size pendant domes. The PP351 and PP451 models mount to rooftops or other smooth horizontal surfaces. All models accommodate domes that use 1.5-inch NPT pipe.

The mounts are designed to swivel within available clearance limits, which adds to the flexibility, easy maintenance, and usability of the configuration. Manufactured from aluminum, the mounts include indexing bolts to secure the arm in position.