Multi-Rib is McElroy’s proprietary Model of the field’s common R-Panel and it is a multi-use roof and wall rib panel generally used in pre-engineered metal constructing purposes. An optional Purlin Bearing Leg (PBR) rests on purlins and presents support for fastening the panel lap. The technical storage or obtain is https://geoffreyd591fbr3.wikifordummies.com/user