diff --git a/flopy4/discretization/structured_grid.py b/flopy4/adapters.py
similarity index 100%
rename from flopy4/discretization/structured_grid.py
rename to flopy4/adapters.py
diff --git a/flopy4/mf6/interface/flopy3.py b/flopy4/mf6/adapters.py
similarity index 100%
rename from flopy4/mf6/interface/flopy3.py
rename to flopy4/mf6/adapters.py
diff --git a/flopy4/mf6/interface/__init__.py b/flopy4/mf6/interface/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/flopy4/mf6/utils/cbc_reader.py b/flopy4/mf6/utils/cbc_reader.py
index 932af903..eb4024da 100644
--- a/flopy4/mf6/utils/cbc_reader.py
+++ b/flopy4/mf6/utils/cbc_reader.py
@@ -12,9 +12,8 @@
 from attrs import define
 from flopy.discretization import StructuredGrid
 
-from flopy4.discretization.structured_grid import StructuredGridWrapper
-
-from .grid_utils import get_coords
+from flopy4.adapters import StructuredGridWrapper
+from flopy4.mf6.utils.grid_utils import get_coords
 
 
 @define
diff --git a/test/test_interface.py b/test/test_interface.py
index 519668fd..237f8518 100644
--- a/test/test_interface.py
+++ b/test/test_interface.py
@@ -5,9 +5,9 @@
 from flopy.discretization import StructuredGrid
 from flopy.discretization.modeltime import ModelTime
 
+from flopy4.mf6.adapters import Flopy3Model, Flopy3Package
 from flopy4.mf6.gwf import Chd, Dis, Gwf, Ic, Npf, Oc
 from flopy4.mf6.ims import Ims
-from flopy4.mf6.interface.flopy3 import Flopy3Model, Flopy3Package
 from flopy4.mf6.simulation import Simulation
 from flopy4.mf6.tdis import Tdis