Description ANBI Aluminium U Flange 20mm x 4Mtr Length Aluminium U Flange is used for the fabrication of pre-insulated air duct panels. Used to connect the duct to the unit. The standard length of the flange is 4 mtr/piece. However, any other shorter length can be custom-made. The width we can supply is 20/30 mm. Proven physiological harmlessness Universal use Very good chemical and corrosion resistance
