Multi-Rib is McElroy’s proprietary version with the sector’s standard R-Panel and it is a multi-use roof and wall rib panel generally used in pre-engineered metal making programs. An optional Purlin Bearing Leg (PBR) rests on purlins and presents assistance for fastening the panel lap. They're prone to oil canning – https://high-qualitybrowtweezers12210.designertoblog.com/60850378/industrial-wall-decor-secrets