... / T6 6)The lengths, heights and thickness for window/door extrusion are various upon request7)Processing of extrusion ... , hard-anodized, painting and so on9)Surface colors for aluminum window extrusion/door extrusion: natrual, matt black, green, red ... quality 11)Applications for aluminium window extrusion and aluminium door extrusion:For indoor usage For outdoor usage Window profileWindow frame door ...