diff --git a/code/game/machinery/doors/airlock.dm b/code/game/machinery/doors/airlock.dm
index acd7a446c19..9b01f7b6bd7 100644
--- a/code/game/machinery/doors/airlock.dm
+++ b/code/game/machinery/doors/airlock.dm
@@ -127,6 +127,36 @@
 	icon = 'icons/obj/doors/Doormaint.dmi'
 	assembly_type = /obj/structure/door_assembly/door_assembly_mai
 
+/obj/machinery/door/airlock/maintenance/cargo
+	icon = 'icons/obj/doors/Doormaint_cargo.dmi'
+	req_one_access = list(access_cargo)
+
+/obj/machinery/door/airlock/maintenance/command
+	icon = 'icons/obj/doors/Doormaint_command.dmi'
+	req_one_access = list(access_heads)
+
+/obj/machinery/door/airlock/maintenance/common
+	icon = 'icons/obj/doors/Doormaint_common.dmi'
+
+/obj/machinery/door/airlock/maintenance/engi
+	icon = 'icons/obj/doors/Doormaint_engi.dmi'
+	req_one_access = list(access_engine)
+
+/obj/machinery/door/airlock/maintenance/int
+	icon = 'icons/obj/doors/Doormaint_int.dmi'
+
+/obj/machinery/door/airlock/maintenance/medical
+	icon = 'icons/obj/doors/Doormaint_med.dmi'
+	req_one_access = list(access_medical)
+
+/obj/machinery/door/airlock/maintenance/rnd
+	icon = 'icons/obj/doors/Doormaint_rnd.dmi'
+	req_one_access = list(access_research)
+
+/obj/machinery/door/airlock/maintenance/sec
+	icon = 'icons/obj/doors/Doormaint_sec.dmi'
+	req_one_access = list(access_security)
+
 /obj/machinery/door/airlock/external
 	name = "External Airlock"
 	icon = 'icons/obj/doors/Doorext.dmi'
diff --git a/code/game/machinery/doors/multi_tile.dm b/code/game/machinery/doors/multi_tile.dm
index 45501a3de76..434f7e64cb5 100644
--- a/code/game/machinery/doors/multi_tile.dm
+++ b/code/game/machinery/doors/multi_tile.dm
@@ -2,15 +2,44 @@
 /obj/machinery/door/airlock/multi_tile
 	width = 2
 	appearance_flags = 0
+	var/obj/machinery/filler_object/filler1
+	var/obj/machinery/filler_object/filler2
 
 /obj/machinery/door/airlock/multi_tile/New()
 	..()
 	SetBounds()
+	if(opacity)
+		create_fillers()
+
+/obj/machinery/door/airlock/multi_tile/Destroy()
+	qdel_null(filler1)
+	qdel_null(filler2)
+	return ..()
 
 /obj/machinery/door/airlock/multi_tile/Move()
 	. = ..()
 	SetBounds()
 
+/obj/machinery/door/airlock/multi_tile/open()
+	. = ..()
+
+	if(filler1)
+		filler1.set_opacity(opacity)
+		if(filler2)
+			filler2.set_opacity(opacity)
+
+	return .
+
+/obj/machinery/door/airlock/multi_tile/close()
+	. = ..()
+
+	if(filler1)
+		filler1.set_opacity(opacity)
+		if(filler2)
+			filler2.set_opacity(opacity)
+
+	return .
+
 /obj/machinery/door/airlock/multi_tile/proc/SetBounds()
 	if(dir in list(EAST, WEST))
 		bound_width = width * world.icon_size
@@ -19,9 +48,35 @@
 		bound_width = world.icon_size
 		bound_height = width * world.icon_size
 
+/obj/machinery/door/airlock/multi_tile/proc/create_fillers()
+	if(src.dir > 3)
+		filler1 = new/obj/machinery/filler_object (src.loc)
+		filler2 = new/obj/machinery/filler_object (get_step(src,EAST))
+	else
+		filler1 = new/obj/machinery/filler_object (src.loc)
+		filler2 = new/obj/machinery/filler_object (get_step(src,NORTH))
+	filler1.density = 0
+	filler2.density = 0
+	filler1.set_opacity(opacity)
+	filler2.set_opacity(opacity)
+
 /obj/machinery/door/airlock/multi_tile/glass
 	name = "Glass Airlock"
 	icon = 'icons/obj/doors/Door2x1glass.dmi'
 	opacity = 0
 	glass = 1
 	assembly_type = /obj/structure/door_assembly/multi_tile
+
+/obj/machinery/door/airlock/multi_tile/metal
+	name = "Airlock"
+	icon = 'icons/obj/doors/Door2x1metal.dmi'
+	assembly_type = /obj/structure/door_assembly/multi_tile
+
+/obj/machinery/filler_object
+	name = ""
+	icon = 'icons/obj/doors/rapid_pdoor.dmi'
+	icon_state = ""
+	density = 0
+
+/obj/machinery/door/airlock/multi_tile/metal/mait
+	icon = 'icons/obj/doors/Door2x1_Maint.dmi'
diff --git a/icons/obj/doors/Door2x1_Maint.dmi b/icons/obj/doors/Door2x1_Maint.dmi
new file mode 100644
index 00000000000..8b60326932a
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diff --git a/icons/obj/doors/Door2x1glass.dmi b/icons/obj/doors/Door2x1glass.dmi
index b05a7a931a2..3542659eee5 100644
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diff --git a/icons/obj/doors/Door2x1glass_old.dmi b/icons/obj/doors/Door2x1glass_old.dmi
new file mode 100644
index 00000000000..b05a7a931a2
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diff --git a/icons/obj/doors/Door2x1metal.dmi b/icons/obj/doors/Door2x1metal.dmi
new file mode 100644
index 00000000000..07fd6a27440
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diff --git a/icons/obj/doors/Dooratmo.dmi b/icons/obj/doors/Dooratmo.dmi
index a9cc31f9d73..84e54e5a954 100644
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index 00000000000..a9cc31f9d73
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diff --git a/icons/obj/doors/Dooratmoglass.dmi b/icons/obj/doors/Dooratmoglass.dmi
index 37928a80c53..6226b6dce4c 100644
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index 00000000000..37928a80c53
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diff --git a/icons/obj/doors/Doorbananium.dmi b/icons/obj/doors/Doorbananium.dmi
index e50a4773c30..b495e30a24d 100644
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new file mode 100644
index 00000000000..e50a4773c30
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diff --git a/icons/obj/doors/Doorcom.dmi b/icons/obj/doors/Doorcom.dmi
index 315f6441887..a7220d359b9 100644
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diff --git a/icons/obj/doors/Doorcom_old.dmi b/icons/obj/doors/Doorcom_old.dmi
new file mode 100644
index 00000000000..315f6441887
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diff --git a/icons/obj/doors/Doorcomglass.dmi b/icons/obj/doors/Doorcomglass.dmi
index fa9599b8c3d..225ab47a6b0 100644
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diff --git a/icons/obj/doors/Doorcomglass_old.dmi b/icons/obj/doors/Doorcomglass_old.dmi
new file mode 100644
index 00000000000..fa9599b8c3d
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diff --git a/icons/obj/doors/Doordiamond.dmi b/icons/obj/doors/Doordiamond.dmi
index 6504d463b9d..db10dd7450b 100644
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new file mode 100644
index 00000000000..6504d463b9d
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diff --git a/icons/obj/doors/Dooreng.dmi b/icons/obj/doors/Dooreng.dmi
index 07cb0dd9a89..be37dee0ded 100644
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index 1d32895f84d..d55d66ed63e 100644
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index 07cb0dd9a89..589fdc6ea2b 100644
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new file mode 100644
index 00000000000..07cb0dd9a89
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index 191c0f46cee..90986a34504 100644
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diff --git a/icons/obj/doors/Doorfreezer.dmi b/icons/obj/doors/Doorfreezer.dmi
index f201659bb06..54f409e75f5 100644
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index 9eb7098c62e..cd0c0543cfb 100644
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index 00000000000..9eb7098c62e
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diff --git a/icons/obj/doors/Doorgold.dmi b/icons/obj/doors/Doorgold.dmi
index 30e44c7610c..435d448c347 100644
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index 00000000000..30e44c7610c
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diff --git a/icons/obj/doors/Doormaint.dmi b/icons/obj/doors/Doormaint.dmi
index 5e71c4da761..39cf7cf87b8 100644
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new file mode 100644
index 00000000000..1228b54a467
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index 08f5e9799af..e6295f9df6c 100644
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diff --git a/icons/turf/wall_masks.dmi b/icons/turf/wall_masks.dmi
index d67671c4d63..3c9072dafa0 100644
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diff --git a/icons/turf/wall_masks_old.dmi b/icons/turf/wall_masks_old.dmi
new file mode 100644
index 00000000000..d67671c4d63
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