Heatsinks are currently available for the ICS (Industrial Case System, for the DIN rail) and UCS (Universal Case System, for outdoor use) housing series.
DIN rail housing, Lower housing part with metal foot catch, Level 1: with vents, width: 25 mm, height: 122.5 mm, depth: 108.35 mm, color: light gray (similar RAL 7035), cross connection: DIN rail connector (optional), number of positions cross connector: 8