Marshall Tufflex Flat Tee is made of PVC-U. Suitable for Sterling Profile 1 trunking. The moulded flat tee has integral bend radius control. Sterling Profile systems 1 is popular and stylish looking perimeter dado and skirting systems that are easy and cost effective to use. A firm favourite for many years due to its versatility, range of fittings and accessories and suitability for many different cable management installation needs.