Semi-rigid notices suitable for mounting on racking, shelving, mezzanine floors etc. They detail the procedures for the maintenance of racking, shelving and mezzanine structures.The illustrations allow for maximum shelf and bay load weights, to be labelled, or written in with a permanent marker pen, plus installation details and reference numbers. BLS1-5 are manufactured from tough and durable PVC, BLS6&7 are made from 1.5mm thick white rigid styrene.