Enclosed 4 Port DC power distribution panel. Each output port is protected by a Mini ATC fuse. The MAIN port is also fused by the same type of fuse. Each port is filtered for RF. This unit is also provided with surge and reverse polarity protection to 18 VDC; 25 Amp Main Fuse Rating; UL94 V-0 housing material. Size, 4" X 2" X 1"