Note: Bolt pattern is different to original High Light boards.
These double heatsinks are predrilled for mounting 2x new High Light 420 boards end-to-end, but can also mount original High Lights and standard Quantum Boards with extra drilling.
420 Heatsinks are slightly longer (960mm vs 888mm) and heavier (3kg vs 2.8kg) than original High Light Heatsinks.
Heatsinks include 5mm mounting holes at each corner and in the middle of the heatsink (6x total) for ratchet hangars or aluminium tie bar connectors etc, plus a 16mm cable hole in the middle.
Whilst these are primarily designed for remote drivers, there is enough room in the middle of the heatsink to drill two mounting holes for most Mean Well drivers if desired.
960mm x 206mm