Manufactured of PVC, UL 94-VO compliant and flame retardant;1 Stick - Length of each Stick: 5 Feet - Pre-installed adhesive backing;Can be painted with a Latex based paint to help blend in with walls and ceilings;Channel size: (See picture 2). This is the Small (1075) Corner Raceway;MEDIUM: www.amazon.com/gp/product/B00UIBWCVG LARGE: www.amazon.com/gp/product/B00UIBW7TS