When you want metal siding that makes a statement, Kauffman’s R‑rib panel delivers. As with G-rib, these panels work well for agricultural, commercial, and residential needs. What sets them apart is thicker steel and taller, angular ribs, which add rigidity, giving extra strength and long-term value. (And, like the G-rib, these panels work well for roofing.) Due to their thickness and form, they can span longer distances and withstand more demanding situations.