Substitution UMS heatsinks Dissipante or Mini Dissipante 4U 400

Please note - substitution only! This is not a physical product. It cannot be purchased separately. This is a substitution request for the heatsinks that can only be purchased at the same time as you purchase a complete chassis. This substitution will replace all the 4 regular heatsinks in your Dissipante or Mini Dissipante chassis with heatsinks pre-drilled and pre-tapped to the UMS specification.