diff --git a/mods/doors/init.lua b/mods/doors/init.lua
index 43e08b17..adf1e4e6 100644
--- a/mods/doors/init.lua
+++ b/mods/doors/init.lua
@@ -444,14 +444,25 @@ function doors.register(name, def)
 	def.collision_box = {type = "fixed", fixed = {-1/2,-1/2,-1/2,1/2,3/2,-6/16}}
 
 	def.model = def.model or "door"
-	def.mesh = def.model .. "_a.obj"
-	minetest.register_node(":" .. name .. "_a", def)
+	def.mesh = def.model .. "_a.b3d"
+	minetest.register_node(":" .. name .. "_a", table.copy(def))
 
-	def.mesh = def.model .. "_b.obj"
-	minetest.register_node(":" .. name .. "_b", def)
+	def.model = def.model or "door"
+	def.mesh = def.model .. "_b.b3d"
+	minetest.register_node(":" .. name .. "_b", table.copy(def))
+
+	def.model = def.model or "door"
+	def.mesh = def.model .. "_b.b3d"
+	minetest.register_node(":" .. name .. "_c", table.copy(def))
+
+	def.model = def.model or "door"
+	def.mesh = def.model .. "_a.b3d"
+	minetest.register_node(":" .. name .. "_d", table.copy(def))
 
 	doors.registered_doors[name .. "_a"] = true
 	doors.registered_doors[name .. "_b"] = true
+	doors.registered_doors[name .. "_c"] = true
+	doors.registered_doors[name .. "_d"] = true
 end
 
 doors.register("door_wood", {