One Step Non SUSY Unification

We show that it is possible to achieve one step gauge coupling unification in a general class of non supersymmetric models which at low energies have only the standard particle content and extra Higgs fields doublets. The constraints are the experimental values of ${\alpha }_{em}$, ${\alpha }_s$ and ${\sin }^2{\theta }_W$ at ${10}^{2}GeVs$, and the lower bounds for FCNC and proton decay rates. Specific example are pointed out.