Replaces Dometic Brisk II
The Dometic Brisk II sits on the same 14 x 14 in roof opening as every Coleman-Mach unit, so the swap is a lift-off, lift-on with a new gasket. What changes is inside: the Dometic ceiling assembly and thermostat come out and a Coleman-Mach ceiling assembly goes in, which is why our complete kits include it. The 13,500 BTU Mach 3 Plus replaces a Brisk II 13.5K; the Mach 15 Plus replaces a Brisk II 15K. Full walkthrough on Replacing a Dometic or Furrion.