Simpson PPBF66 6x6 Adjustable Porch Post BaseModel No. PPBF66 Nominal Post Size. 6x6 Gauge. 12 Width 1 (in.) 5 1 2 Width 2 (in.) 5 1 2 Coating Material. Simpson Strong Tie Gray Paint The PPBF adjustable porch post base safely supports porch framing through all phases of construction, eliminating the need for temporary vertical support and providing a stronger structure for contractors working on and around the porch roof. The seat adjusts to accommodate varying porch slab thicknesses from 4" to