The QC10L82G Quik Corbel Ledge with fire-resistant insualtion and a stainless steel cover has a 2-hour fire rating. The ledge is typically attached to the embed at the job site. Each ledge are marked with lot numbers for material and manufacturing traceability.The Quik Corbel System is designed to improve efficiencies for precast elements that require a bearing ledge. The two-piece design eliminates the need for specialty forms or secondary cast haunches. Patent Pending.