diff --git a/gerbmerge/config.py b/gerbmerge/config.py
index cb8c7f2..51e506a 100644
--- a/gerbmerge/config.py
+++ b/gerbmerge/config.py
@@ -39,6 +39,7 @@
    'excellondecimals': 4,            # Number of digits after the decimal point in input Excellon files
    'excellonleadingzeros': 0,        # Generate leading zeros in merged Excellon output file
    'outlinelayerfile': None,         # Name of file to which to write simple box outline, or None
+   'outlinelayers': None,	     # e.g., *toplayer, *bottomlayer
    'scoringfile': None,              # Name of file to which to write scoring data, or None
    'leftmargin': 0,                  # Inches of extra room to leave on left side of panel for tooling
    'topmargin': 0,                   # Inches of extra room to leave on top side of panel for tooling
@@ -254,7 +255,9 @@ def parseConfigFile(fname, Config=Config, Jobs=Jobs):
     Config['cutlinelayers'] = parseStringList(Config['cutlinelayers'])
   if Config['cropmarklayers']:
     Config['cropmarklayers'] = parseStringList(Config['cropmarklayers'])
-    
+  if Config['outlinelayers']:
+    Config['outlinelayers'] = parseStringList(Config['outlinelayers'])
+
   # Process list of minimum feature dimensions
   if Config['minimumfeaturesize']:
     temp = Config['minimumfeaturesize'].split(",")
diff --git a/gerbmerge/gerbmerge.py b/gerbmerge/gerbmerge.py
index 149baca..3b9012f 100644
--- a/gerbmerge/gerbmerge.py
+++ b/gerbmerge/gerbmerge.py
@@ -163,6 +163,22 @@ def writeFiducials(fid, drawcode, OriginX, OriginY, MaxXExtent, MaxYExtent):
       y = MaxYExtent + y
     fid.write('X%07dY%07dD03*\n' % (util.in2gerb(x), util.in2gerb(y)))
 
+def writeOutline(fid, OriginX, OriginY, MaxXExtent, MaxYExtent):
+  # Write width-1 aperture to file
+  AP = aptable.Aperture(aptable.Circle, 'D10', 0.001)
+  AP.writeDef(fid)
+
+  # Choose drawing aperture D10
+  fid.write('D10*\n')
+
+  # Draw the rectangle
+  fid.write('X%07dY%07dD02*\n' % (util.in2gerb(OriginX), util.in2gerb(OriginY)))        # Bottom-left
+  fid.write('X%07dY%07dD01*\n' % (util.in2gerb(OriginX), util.in2gerb(MaxYExtent)))     # Top-left
+  fid.write('X%07dY%07dD01*\n' % (util.in2gerb(MaxXExtent), util.in2gerb(MaxYExtent)))  # Top-right
+  fid.write('X%07dY%07dD01*\n' % (util.in2gerb(MaxXExtent), util.in2gerb(OriginY)))     # Bottom-right
+  fid.write('X%07dY%07dD01*\n' % (util.in2gerb(OriginX), util.in2gerb(OriginY)))        # Bottom-left
+      
+
 def writeCropMarks(fid, drawing_code, OriginX, OriginY, MaxXExtent, MaxYExtent):
   """Add corner crop marks on the given layer"""
 
@@ -517,7 +533,9 @@ def merge(opts, args, gui = None):
         writeFiducials(fid, drawing_code_fiducial_copper, OriginX, OriginY, MaxXExtent, MaxYExtent)
       elif ((layername=='*topsoldermask') or (layername=='*bottomsoldermask')):
         writeFiducials(fid, drawing_code_fiducial_soldermask, OriginX, OriginY, MaxXExtent, MaxYExtent)
-      
+    if config.Config['outlinelayers'] and (layername in config.Config['outlinelayers']):
+      writeOutline(fid, OriginX, OriginY, MaxXExtent, MaxYExtent)
+
     writeGerberFooter(fid)
     fid.close()