These are the uniform-resolution dark-matter-only cosmological simulation boxes that we used to generate initial conditions for many (but not all!) of the FIRE-2 simulations. There are 4 simulations, named by the comoving side length of the box:

86 Mpc
108 Mpc
136 Mpc
172 Mpc

They all have the same number of dark-matter particles, so they differ in mass resolution by a factor of 2.

They all use the same cosmology:
h = 0.68
omega_lambda = 0.69
omega_matter = 0.31
omega_baryon = 0.048
sigma_8 = 0.82
n_s = 0.97
w = -1

Each simulation has 11 snapshots. Snapshot 0 corresponds to the initial conditions at z = 99.

Each one has Rockstar halo catalogs at each snapshot after snapshot 0. L172 also has halo merger trees.