External Mount Heat Sink for 25A SSR

This external mount heat sink is for dissipating the heat from 25A SSR.  It allows the SSR to handle up to 25 Amp without forced air cooling. The SSR and its wiring will stay inside the box. The advantage of using a external mounting is that there is no need for venting hole or cooling fan in the controller box.  Mounting screws and heat conductive grease are included.

Dimension:  100 x 90 x 30 mm (4"x3.5"x1.2").
Mounting Hole: 5 mm diameter on four corners with 90 x 79.5 mm spacing, M4x0.7 thread 
User will need to cut a 70x55 mm (2.75"x2.2") rectangular hole for the SSR.
Thermal Resistance 2.0 C/W.

SSR Mounted to the heatsink
 

Mounting cutout