Out size of the electrical box: 6.7" x 5.1" x 3.1"/170mm x 130mm x 80mm; Inner size of the electrical box: 5.7" x 4.6" x 2"/ 145 x 117 x 52 mm; Radiator Size: 2.5"x1.1"/64mmx27mm - - (Allowable Error: ±2mm) Material: metal; Net weight: 460g; Main color: blue Come with 4 box legs on the bottom, Easy to place and lift, can be place on any platform. Design with matt plastic surface, screw tightened, which can offer you with electrifying protection. The electric enclouse heat sink nature, electromagnetic field protection and robust construction,great for electronic projects, student projects, amplifiers, etc