The UniPier Rooftop support system provides a simple and versatile way to support and manage channel, pipe, tubing, conduit, HVAC systems, and the like. The UniPier system supports without roof surface penetration and allows the parts to remain off the surface. • Deck base is 8” x 8” with a height of 3” • Coupler housing excepts 3/8”-16 all-thread • Structural housing accepts max 1-5/8” x 1-5/8” channel • Polycarbonate plastic (UV Resistant)