Trusscore 3/4" J Trim is used on RibCore projects to complete corners, wall perimeters and trim around windows & doors. It can also be used on SlatWall projects to frame the perimeter of your SlatWall installation. , RibCore by Trusscore is a high-strength PVC corrugated panel that’s long-lasting, cost effective and easy to maintain. Designed to be used in wall or ceiling applications, RibCore is ideal for a broad range of Agricultural, Commercial, and Industrial applications, including: drive sheds, warehouses, public bathrooms and showers, garages, agricultural pole barns and facilities, horse stables, and dog kennels.