aluminium window 1, economical style 2, looks elegant 3, with waterproof and soundproof Aluminium casement windowProfileAluminium alloy 6063-T5, any color ,wall thickness ... & Doors Co.,Ltd Tel: +862081729978Fax: +862081729978Mobile: +8613794402559TM: cn220124252Skypi:tjaluminium3 Aluminium casement window