AS 2.4 M collector is manufactured of a copper absorber with selective BLUETEC treatment welded by ultrasonic to a grid collector. Absorber welding is carried out by induction. The frame is 100% extruded and high quality ......AS 2.4 M collector is manufactured of a copper absorber with selective BLUETEC treatment welded by ultrasonic to a grid collector. Absorber welding is carried out by induction. The frame is 100% extruded and high quality anodized Tempered solar glass of high resistance and low emissivity Back cover made up of thermal Polyethylene.