  In this work, we have considered the magnetic universe in non-linear
electrodynamics. The Einstein's field equations for non-flat FRW model have
been considered when the universe is filled with the matter and magnetic field
only. We have discussed the validity of the generalized second law of
thermodynamics of the magntic universe bounded by Hubble, apparent, particle
and event horizons using Gibb's law and the first law of thermodynamics for
interacting and non-interacting scenarios. It has been shown that the GSL is
always satisfied for Hubble, apparent and particle horizons but for event
horizon, the GSL is violated initially and satisfied at late stage of the
universe.
