Multi-Rib is McElroy’s proprietary version in the industry’s common R-Panel and is also a multi-use roof and wall rib panel mostly used in pre-engineered metal building programs. An optional Purlin Bearing Leg (PBR) rests on purlins and provides aid for fastening the panel lap. Having one vendor approach to walls, https://lyndonz347fgu1.idblogmaker.com/28977003/rustic-metal-wall-art-no-further-a-mystery