Chl 2m X 1.1mChl 2m X 1. 1m Professional workplace safety and information sign This sign clearly communicates the message Chl 2m X 1. 1m and is designed to help organisations display clear guidance, warnings or instructions in the workplace. Clear signage supports safer operations and ensures staff, visitors and contractors understand the rules that apply within a particular area. Signs such as this are commonly used in factories, warehouses, farms, offices,