The aluminum T-slot cover is available in black or clear anodize for 15 and 40-series profiles. It prevents dust and debris build up, covers wires and tubes in the T-slot channel, and adds a great finishing touch that blends into projects for a polished look.
For technical details and images, please search for the product using the 80/20 interactive catalogue found here: https://catalogs.8020.net/80-20-Catalog-26/C/.