RELAY HEAT SINK; Product Range:HS172 Ser; RELAY HEAT SINK; Product Range:HS172 Series; Thermal Resistance:1.7°C/W; Heat Sink Mounting:Panel; External Length:104.7mm; External Height:40.6mm; External Width:85.3mm; Accessory Type:Heat Sink; Depth:104.7mm; Height:40.6mm