This heatsink is specially designed for High Power RF amplifiers. 

Dutch transmitters is using this heatsink for the 300 watts Mosfet amplifiers with an integrated powersupply  mounted one the heatsink. With this heatsink you dont get any heating problems even not during extreme wheater conditions.

Specifications:

• Length / Lengte  :   13 cm
• Width / Breedte:  21.5 cm
• Height / Hoogte :   7.8 cm