diff --git a/code/game/machinery/doors/airlock.dm b/code/game/machinery/doors/airlock.dm
index 7675b843202..a3acc605c5b 100644
--- a/code/game/machinery/doors/airlock.dm
+++ b/code/game/machinery/doors/airlock.dm
@@ -119,6 +119,10 @@
 
 /obj/machinery/door/airlock/Initialize()
 	. = ..()
+	//SKYRAT EDIT ADDITION BEGIN
+	if(multi_tile)
+		SetBounds()
+	//SKYRAT EDIT END
 	wires = set_wires()
 	if(frequency)
 		set_frequency(frequency)
@@ -616,8 +620,6 @@
 			add_overlay(I)
 
 /* - SKYRAT ORIGINAL
-=======
->>>>>>> 56345975ba6 (The Great Radio Rework: NTNET Part 1 of many. (#54462))
 /obj/machinery/door/airlock/proc/check_unres() //unrestricted sides. This overlay indicates which directions the player can access even without an ID
 	if(hasPower() && unres_sides)
 		if(unres_sides & NORTH)
@@ -1159,9 +1161,17 @@
 	update_icon(AIRLOCK_OPENING, 1)
 	sleep(1)
 	set_opacity(0)
+	//SKYRAT EDIT ADDITION BEGIN - LARGE_DOOR
+	if(multi_tile)
+		filler.set_opacity(FALSE)
+	//SKYRAT EDIT END
 	update_freelook_sight()
 	sleep(4)
 	density = FALSE
+	//SKYRAT EDIT ADDITION BEGIN - LARGE_DOOR
+	if(multi_tile)
+		filler.density = FALSE
+	//SKYRAT EDIT END
 	flags_1 &= ~PREVENT_CLICK_UNDER_1
 	air_update_turf(1)
 	sleep(1)
@@ -1210,16 +1220,26 @@
 		density = TRUE
 		flags_1 |= PREVENT_CLICK_UNDER_1
 		air_update_turf(1)
+		//SKYRAT EDIT ADDITION BEGIN - LARGE_DOOR
+		if(multi_tile)
+			filler.density = TRUE
+		//SKYRAT EDIT END
 	sleep(1)
 	if(!air_tight)
 		density = TRUE
 		flags_1 |= PREVENT_CLICK_UNDER_1
 		air_update_turf(1)
+		//SKYRAT EDIT ADDITION BEGIN - LARGE_DOOR
+		if(multi_tile)
+			filler.density = TRUE
+		//SKYRAT EDIT END
 	sleep(4)
 	if(dangerous_close)
 		crush()
 	if(visible && !glass)
 		set_opacity(1)
+		if(multi_tile)
+			filler.set_opacity(TRUE)
 	update_freelook_sight()
 	sleep(1)
 	update_icon(AIRLOCK_CLOSED, 1)
diff --git a/code/game/objects/structures/door_assembly.dm b/code/game/objects/structures/door_assembly.dm
index 17d2c49b384..d312499e635 100644
--- a/code/game/objects/structures/door_assembly.dm
+++ b/code/game/objects/structures/door_assembly.dm
@@ -248,6 +248,10 @@
 				else
 					door = new airlock_type( loc )
 				door.setDir(dir)
+				//SKYRAT EDIT ADDITION BEGIN - LARGE_DOORS
+				if(door.multi_tile)
+					door.SetBounds()
+				//SKYRAT EDIT END
 				door.unres_sides = electronics.unres_sides
 				//door.req_access = req_access
 				door.electronics = electronics
diff --git a/modular_skyrat/modules/aesthetics/airlock/code/airlock.dm b/modular_skyrat/modules/aesthetics/airlock/code/airlock.dm
index 89b72713dc4..d1849fef97f 100644
--- a/modular_skyrat/modules/aesthetics/airlock/code/airlock.dm
+++ b/modular_skyrat/modules/aesthetics/airlock/code/airlock.dm
@@ -26,6 +26,15 @@
 	var/forcedOpen = 'modular_skyrat/modules/aesthetics/airlock/sound/open_force.ogg' //Come on guys, why aren't all the sound files like this.
 	var/forcedClosed = 'modular_skyrat/modules/aesthetics/airlock/sound/close_force.ogg'
 
+	var/has_environment_lights = TRUE //Does this airlock emit a light?
+	var/light_color_poweron = AIRLOCK_POWERON_LIGHT_COLOR
+	var/light_color_bolts = AIRLOCK_BOLTS_LIGHT_COLOR
+	var/light_color_access = AIRLOCK_ACCESS_LIGHT_COLOR
+	var/light_color_emergency = AIRLOCK_EMERGENCY_LIGHT_COLOR
+	var/light_color_deny = AIRLOCK_DENY_LIGHT_COLOR
+	var/door_light_range = AIRLOCK_LIGHT_RANGE
+	var/door_light_power = AIRLOCK_LIGHT_POWER
+
 /obj/machinery/door/airlock/Initialize()
 	//overlay2
 	vis_overlay1 = new()
@@ -37,6 +46,9 @@
 	vis_overlay2.plane = 1
 	vis_contents += vis_overlay1
 	vis_contents += vis_overlay2
+	if(multi_tile)
+		vis_overlay1.dir = src.dir
+		vis_overlay2.dir = src.dir
 	set_airlock_overlays()
 	. = ..()
 
@@ -93,17 +105,17 @@
 			else if(obj_integrity < (0.75 * max_integrity))
 				damag_overlay = get_airlock_overlay("sparks_damaged", overlays_file)
 			if(lights && hasPower())
-				pre_light_range = AIRLOCK_LIGHT_RANGE
-				pre_light_power = AIRLOCK_LIGHT_POWER
+				pre_light_range = door_light_range
+				pre_light_power = door_light_power
 				if(locked)
 					lights_overlay = "lights_bolts"
-					pre_light_color = AIRLOCK_BOLTS_LIGHT_COLOR
+					pre_light_color = light_color_bolts
 				else if(emergency)
 					lights_overlay = "lights_emergency"
-					pre_light_color = AIRLOCK_EMERGENCY_LIGHT_COLOR
+					pre_light_color = light_color_emergency
 				else
 					lights_overlay = "lights_poweron"
-					pre_light_color = AIRLOCK_POWERON_LIGHT_COLOR
+					pre_light_color = light_color_poweron
 			if(note)
 				note_overlay = get_airlock_overlay(notetype, note_overlay_file)
 
@@ -129,10 +141,10 @@
 			if(seal)
 				seal_overlay = get_airlock_overlay("sealed", overlays_file)
 			if(lights && hasPower())
-				pre_light_range = AIRLOCK_LIGHT_RANGE
-				pre_light_power = AIRLOCK_LIGHT_POWER
+				pre_light_range = door_light_range
+				pre_light_power = door_light_power
 				lights_overlay = "lights_denied"
-				pre_light_color = AIRLOCK_DENY_LIGHT_COLOR
+				pre_light_color = light_color_deny
 			if(note)
 				note_overlay = get_airlock_overlay(notetype, note_overlay_file)
 
@@ -173,17 +185,17 @@
 			if(obj_integrity < (0.75 * max_integrity))
 				damag_overlay = get_airlock_overlay("sparks_open", overlays_file)
 			if(lights && hasPower())
-				pre_light_range = AIRLOCK_LIGHT_RANGE
-				pre_light_power = AIRLOCK_LIGHT_POWER
+				pre_light_range = door_light_range
+				pre_light_power = door_light_power
 				if(locked)
 					lights_overlay = "lights_bolts_open"
-					pre_light_color = AIRLOCK_BOLTS_LIGHT_COLOR
+					pre_light_color = light_color_bolts
 				else if(emergency)
 					lights_overlay = "lights_emergency_open"
-					pre_light_color = AIRLOCK_EMERGENCY_LIGHT_COLOR
+					pre_light_color = light_color_emergency
 				else
 					lights_overlay = "lights_poweron_open"
-					pre_light_color = AIRLOCK_POWERON_LIGHT_COLOR
+					pre_light_color = light_color_poweron
 			if(note)
 				note_overlay = get_airlock_overlay("[notetype]_open", note_overlay_file)
 
@@ -194,11 +206,11 @@
 			else
 				filling_overlay = get_airlock_overlay("fill_closing", icon)
 			if(lights && hasPower())
-				pre_light_range = AIRLOCK_LIGHT_RANGE
-				pre_light_power = AIRLOCK_LIGHT_POWER
+				pre_light_range = door_light_range
+				pre_light_power = door_light_power
 				//lights_overlay = get_airlock_overlay("lights_opening", overlays_file)
 				lights_overlay = "lights_closing"
-				pre_light_color = AIRLOCK_ACCESS_LIGHT_COLOR
+				pre_light_color = light_color_access
 			if(panel_open)
 				if(security_level)
 					panel_overlay = get_airlock_overlay("panel_closing_protected", overlays_file)
@@ -214,11 +226,11 @@
 			else
 				filling_overlay = get_airlock_overlay("fill_opening", icon)
 			if(lights && hasPower())
-				pre_light_range = AIRLOCK_LIGHT_RANGE
-				pre_light_power = AIRLOCK_LIGHT_POWER
+				pre_light_range = door_light_range
+				pre_light_power = door_light_power
 				//lights_overlay = get_airlock_overlay("lights_opening", overlays_file)
 				lights_overlay = "lights_opening"
-				pre_light_color = AIRLOCK_ACCESS_LIGHT_COLOR
+				pre_light_color = light_color_access
 			if(panel_open)
 				if(security_level)
 					panel_overlay = get_airlock_overlay("panel_opening_protected", overlays_file)
@@ -228,7 +240,10 @@
 				note_overlay = get_airlock_overlay("[notetype]_opening", note_overlay_file)
 
 	cut_overlays()
-	set_light(pre_light_range, pre_light_power, pre_light_color)
+	if(has_environment_lights)
+		set_light(pre_light_range, pre_light_power, pre_light_color)
+		if(multi_tile)
+			filler.set_light(pre_light_range, pre_light_power, pre_light_color)
 	add_overlay(frame_overlay)
 	add_overlay(filling_overlay)
 	add_overlay(panel_overlay)
@@ -244,7 +259,9 @@
 /obj/machinery/door/airlock/proc/update_vis_overlays(overlay_state)
 	vis_overlay1.icon_state = overlay_state
 	vis_overlay2.icon_state = overlay_state
-
+	if(multi_tile)
+		vis_overlay1.dir = src.dir
+		vis_overlay2.dir = src.dir
 
 //STATION AIRLOCKS
 /obj/machinery/door/airlock
diff --git a/modular_skyrat/modules/large_doors/code/large_doors.dm b/modular_skyrat/modules/large_doors/code/large_doors.dm
new file mode 100644
index 00000000000..9a3bcc43494
--- /dev/null
+++ b/modular_skyrat/modules/large_doors/code/large_doors.dm
@@ -0,0 +1,119 @@
+/obj/machinery/door/airlock
+	var/multi_tile = FALSE
+	var/width = 1
+	var/obj/airlock_filler_object/filler
+
+/obj/machinery/door/airlock/Move()
+	if(multi_tile)
+		SetBounds()
+	. = ..()
+
+/obj/machinery/door/airlock/Destroy()
+	if(filler)
+		qdel(filler)
+	. = ..()
+
+/obj/machinery/door/airlock/proc/SetBounds()
+	if(!multi_tile)
+		return
+	if(dir in list(NORTH, SOUTH))
+		bound_width = width * world.icon_size
+		bound_height = world.icon_size
+		if(!filler)
+			filler = new(get_step(src,EAST))
+			filler.parent_airlock = src
+		else
+			filler.loc = get_step(src,EAST)
+	else
+		bound_width = world.icon_size
+		bound_height = width * world.icon_size
+		if(!filler)
+			filler = new(get_step(src,NORTH))
+			filler.parent_airlock = src
+		else
+			filler.loc = get_step(src,NORTH)
+	filler.density = density
+	filler.set_opacity(opacity)
+
+/obj/machinery/door/airlock/multi_tile
+	multi_tile = TRUE
+	width = 2
+	has_environment_lights = FALSE
+
+/obj/machinery/door/airlock/multi_tile/glass
+	name = "Large Glass Airlock"
+	icon = 'modular_skyrat/modules/large_doors/icons/glass/multi_tile.dmi'
+	overlays_file = 'modular_skyrat/modules/large_doors/icons/glass/overlays.dmi'
+	opacity = FALSE
+	airlock_material = "glass"
+	glass = TRUE
+	assemblytype = /obj/structure/door_assembly/multi_tile/glass
+
+/obj/machinery/door/airlock/multi_tile/metal
+	name = "Large Airlock"
+	icon = 'modular_skyrat/modules/large_doors/icons/metal/multi_tile.dmi'
+	overlays_file = 'modular_skyrat/modules/large_doors/icons/metal/overlays.dmi'
+	assemblytype = /obj/structure/door_assembly/multi_tile/metal
+
+/obj/airlock_filler_object
+	name = "test"
+	density = TRUE
+	opacity = TRUE
+	anchored = TRUE
+	CanAtmosPass = ATMOS_PASS_DENSITY
+	CanAtmosPassVertical = ATMOS_PASS_DENSITY
+	var/parent_airlock
+
+/obj/airlock_filler_object/CanAllowThrough(atom/movable/mover, turf/target)
+	. = ..()
+	if(.)
+		return
+	// Snowflake handling for PASSGLASS.
+	if(istype(mover) && (mover.pass_flags & PASSGLASS))
+		return !opacity
+
+/obj/airlock_filler_object/can_be_pulled(user, grab_state, force)
+	return FALSE
+
+/obj/airlock_filler_object/singularity_act()
+	return
+
+/obj/airlock_filler_object/singularity_pull(S, current_size)
+	return
+
+//ASSEMBLYS!
+/obj/structure/door_assembly/multi_tile
+	dir = EAST
+	var/width = 1
+
+/obj/structure/door_assembly/multi_tile/Initialize()
+	. = ..()
+	update_dir()
+
+/obj/structure/door_assembly/multi_tile/Move()
+	. = ..()
+	update_dir()
+
+/obj/structure/door_assembly/multi_tile/proc/update_dir()
+	if(dir in list(NORTH, SOUTH))
+		bound_width = width * world.icon_size
+		bound_height = world.icon_size
+	else
+		bound_width = world.icon_size
+		bound_height = width * world.icon_size
+
+/obj/structure/door_assembly/multi_tile/metal
+	name = "Large Airlock Assembly"
+	icon = 'modular_skyrat/modules/large_doors/icons/metal/multi_tile.dmi'
+	base_name = "Large Airlock"
+	overlays_file = 'modular_skyrat/modules/large_doors/icons/metal/overlays.dmi'
+	airlock_type = /obj/machinery/door/airlock/multi_tile/metal
+	glass_type = /obj/machinery/door/airlock/multi_tile/glass
+
+/obj/structure/door_assembly/multi_tile/glass
+	name = "Large Glass Airlock Assembly"
+	icon = 'modular_skyrat/modules/large_doors/icons/glass/multi_tile.dmi'
+	base_name = "Large Glass Airlock"
+	overlays_file = 'modular_skyrat/modules/large_doors/icons/glass/overlays.dmi'
+	airlock_type = /obj/machinery/door/airlock/multi_tile/glass
+
diff --git a/modular_skyrat/modules/large_doors/icons/glass/multi_tile.dmi b/modular_skyrat/modules/large_doors/icons/glass/multi_tile.dmi
new file mode 100644
index 00000000000..a400cb6c61d
Binary files /dev/null and b/modular_skyrat/modules/large_doors/icons/glass/multi_tile.dmi differ
diff --git a/modular_skyrat/modules/large_doors/icons/glass/overlays.dmi b/modular_skyrat/modules/large_doors/icons/glass/overlays.dmi
new file mode 100644
index 00000000000..2f08ff85ea3
Binary files /dev/null and b/modular_skyrat/modules/large_doors/icons/glass/overlays.dmi differ
diff --git a/modular_skyrat/modules/large_doors/icons/metal/multi_tile.dmi b/modular_skyrat/modules/large_doors/icons/metal/multi_tile.dmi
new file mode 100644
index 00000000000..b0b5ca2b20e
Binary files /dev/null and b/modular_skyrat/modules/large_doors/icons/metal/multi_tile.dmi differ
diff --git a/modular_skyrat/modules/large_doors/icons/metal/overlays.dmi b/modular_skyrat/modules/large_doors/icons/metal/overlays.dmi
new file mode 100644
index 00000000000..a47008823b4
Binary files /dev/null and b/modular_skyrat/modules/large_doors/icons/metal/overlays.dmi differ
diff --git a/modular_skyrat/modules/large_doors/readme.md b/modular_skyrat/modules/large_doors/readme.md
new file mode 100644
index 00000000000..1717340292a
--- /dev/null
+++ b/modular_skyrat/modules/large_doors/readme.md
@@ -0,0 +1,26 @@
+## Title: Large Airlocks
+
+MODULE ID: LARGE_DOORS
+
+### Description:
+
+Adds double doors with atmos functionality.
+
+### TG Proc Changes:
+
+- /obj/machinery/door/airlock/open()
+- /obj/machinery/door/airlock/close()
+
+### Defines:
+
+
+### Master file additions
+
+
+### Included files that are not contained in this module:
+
+- N/A
+
+### Credits:
+Gandalf2k15 - Original code
+Eris / Tau Ceti - Sprites
diff --git a/tgstation.dme b/tgstation.dme
index b5fa56cdb1b..e09ae7e92ed 100644
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -3661,6 +3661,7 @@
 #include "modular_skyrat\modules\inflatables\code\inflatable.dm"
 #include "modular_skyrat\modules\jukebox\code\controllers\subsystem\jukeboxes.dm"
 #include "modular_skyrat\modules\jukebox\code\controllers\subsystem\game\machinery\dance_machine.dm"
+#include "modular_skyrat\modules\large_doors\code\large_doors.dm"
 #include "modular_skyrat\modules\layer_shift\code\modules\mob\mob_movement.dm"
 #include "modular_skyrat\modules\mapping\code\dungeon.dm"
 #include "modular_skyrat\modules\mapping\code\furniture.dm"