diff --git a/src/deh_lua.c b/src/deh_lua.c
index eed99c22b..708bb8d02 100644
--- a/src/deh_lua.c
+++ b/src/deh_lua.c
@@ -382,6 +382,11 @@ static inline int lib_getenum(lua_State *L)
 			lua_pushinteger(L, (lua_Integer)ML_WRAPMIDTEX);
 			return 1;
 		}
+		if (fastcmp(p, "EFFECT6"))
+		{
+			lua_pushinteger(L, (lua_Integer)ML_MIDTEXINVISWALL);
+			return 1;
+		}
 		if (mathlib) return luaL_error(L, "linedef flag '%s' could not be found.\n", word);
 		return 0;
 	}
diff --git a/src/doomdata.h b/src/doomdata.h
index c81bc059b..ef0fce7a3 100644
--- a/src/doomdata.h
+++ b/src/doomdata.h
@@ -159,6 +159,9 @@ enum
 
 	// Transfers FOF properties.
 	ML_TFERLINE			= 0x00008000,
+
+	// Like ML_WRAPMIDTEX, but invisible wall style instead
+	ML_MIDTEXINVISWALL	= 0x00010000,
 };
 
 enum
diff --git a/src/p_maputl.c b/src/p_maputl.c
index dca379e83..45f3b5009 100644
--- a/src/p_maputl.c
+++ b/src/p_maputl.c
@@ -509,7 +509,9 @@ P_GetMidtextureTopBottom
 	else
 #endif
 	{
-		if ((linedef->flags & ML_WRAPMIDTEX) && !side->repeatcnt) // "infinite" repeat
+		const boolean invismidtexwall = !!(P_IsLineTripWire(linedef)) ^ !!(linedef->flags & ML_MIDTEXINVISWALL);
+
+		if (((linedef->flags & ML_WRAPMIDTEX) && !side->repeatcnt) || invismidtexwall) // "infinite" repeat
 		{
 			texbottom += side->rowoffset;
 			textop += side->rowoffset;
@@ -782,6 +784,10 @@ void P_LineOpening(line_t *linedef, mobj_t *mobj, opening_t *open)
 			fixed_t textop, texbottom;
 			fixed_t texmid, delta1, delta2;
 
+			// Should we override typical behavior and extend teh midtexture to the ceiling, to include FoFs?
+			// const boolean inifiniteheight = linedef->flags & ML_INFINITEMIDTEXTUREHEIGHT;
+
+			
 			if (P_GetMidtextureTopBottom(linedef, cross.x, cross.y, &textop, &texbottom))
 			{
 				texmid = texbottom+(textop-texbottom)/2;
diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index ee8b8a9b2..12e1c8f8b 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -1977,6 +1977,8 @@ static void ParseTextmapLinedefParameter(UINT32 i, const char *param, const char
 		lines[i].flags |= ML_NOTBOUNCY;
 	else if (fastcmp(param, "transfer") && fastcmp("true", val))
 		lines[i].flags |= ML_TFERLINE;
+	else if (fastcmp(param, "midtexinviswall") && fastcmp("true", val))
+		lines[i].flags |= ML_MIDTEXINVISWALL;
 	// Activation flags
 	else if (fastcmp(param, "repeatspecial") && fastcmp("true", val))
 		lines[i].activation |= SPAC_REPEATSPECIAL;
@@ -2787,6 +2789,8 @@ static void P_WriteTextmap(void)
 			fprintf(f, "notbouncy = true;\n");
 		if (wlines[i].flags & ML_TFERLINE)
 			fprintf(f, "transfer = true;\n");
+		if (wlines[i].flags & ML_MIDTEXINVISWALL)
+			fprintf(f, "midtexinviswall = true;\n");
 		if (wlines[i].activation & SPAC_REPEATSPECIAL)
 			fprintf(f, "repeatspecial = true;\n");
 		if (wlines[i].activation & SPAC_CROSS)