40mm aluminum beam extrusion with two grooves 1.surface: anodized 2.material:AL6063T5 3.fast delivery,3-5days 40mm aluminum beam extrusion with two grooves1)Material:AL6063T52Applications:Commonly used for, doors, cabinet, curtain walls,exhibitions and so on.It can be used for many times 3) Advantages: lightweight, maintenance free, easy to assemble, etc