Why use the 6 poly box? Pretty simple. Poser's box is 8X8 polys per side X6 sides per box X14 boxes per stair = pdg stair-ing at his old computer crunch numbers for a half a pot of coffee vs 6 polys per box X 14 boxes = pdg barely having time to light a smoke to go with the cold cup of coffee on the desk beside him.  lol