Extension system for mounting two solar panels, from 180W to 450W. Place each bracket at each end of your solar panel and secure. Angles: 60/52/45/38.5°. Wall mounting dimensions: Height 500mm. Material: 2mm square XAD steel tube and 3mm angle iron. Color: Black. Supplied with three M8x60mm lag screws and four shock-absorbing corner protectors for solar panels. Package weight: 2.7 kg