Orbit PPEC-12 Pedestal Post Extension PP-30 & PP-60 EXT. Coupling 12”Orbit PPEC 12 PPEC 12 Product Description The Pedestal Post Extension Coupling adds 12 of height to Orbits patented Rooftop Pedestal Posts Series. PPEC 12 is an ideal solution for commercial roofing that require layers of extended foam insulation between the base structure and finished rooftop surface. Multiple PPEC 12s can be stacked on top of each other, allowing for infinite extension of Pedestal Post height. To install, slip the PPEC 12 bottom