diff --git a/edbob/pyramid/grids/core.py b/edbob/pyramid/grids/core.py
index 2aeeb25..9cb0e94 100644
--- a/edbob/pyramid/grids/core.py
+++ b/edbob/pyramid/grids/core.py
@@ -49,6 +49,7 @@ class Grid(edbob.Object):
     checkboxes = False
     deletable = False
     partial_only = False
+    row_attrs = None
 
     def __init__(self, request, **kwargs):
         kwargs.setdefault('fields', OrderedDict())
@@ -98,5 +99,8 @@ class Grid(edbob.Object):
         attrs = {'class_': 'odd' if i % 2 else 'even'}
         return attrs
 
-    def row_attrs(self, row, i):
-        return format_attrs(**self._row_attrs(row, i))
+    def get_row_attrs(self, row, i):
+        attrs = self._row_attrs(row, i)
+        if self.row_attrs:
+            attrs.update(self.row_attrs(row, i))
+        return format_attrs(**attrs)
diff --git a/edbob/pyramid/templates/grids/grid.mako b/edbob/pyramid/templates/grids/grid.mako
index 84c12f6..78542b4 100644
--- a/edbob/pyramid/templates/grids/grid.mako
+++ b/edbob/pyramid/templates/grids/grid.mako
@@ -18,7 +18,7 @@
     </thead>
     <tbody>
       % for i, row in enumerate(grid.iter_rows(), 1):
-          <tr ${grid.row_attrs(row, i)}>
+          <tr ${grid.get_row_attrs(row, i)}>
             % if grid.checkboxes:
                 <td class="checkbox">${grid.checkbox(row)}</td>
             % endif