Large Corner Duct Cable Raceway (1250 Series) - 5 Feet - White Manufactured of PVC, UL 94-VO compliant and flame retardant 1 Stick - Length of each Stick: 5 Feet - Pre-Applied Adhesive Backing - ATTENTION: Clean wall surface, allow 48 - 72 hrs for adhesive to cure before adding cables. Depending on location(ceiling), surface type, and weight, additional adhesive or screws may be needed for permanent installation. Can be painted with a Latex based paint to help blend in with walls and ceilings Channel size: (See picture 2). This is the Large (1250) Corner Raceway SMALL: www.amazon.com/gp/product/B00UIBW59A MEDIUM: www.amazon.com/gp/product/B00UIBWCVG