diff --git a/src/main/java/dan200/computercraft/shared/network/NetworkHandler.java b/src/main/java/dan200/computercraft/shared/network/NetworkHandler.java
index e10f8fc66..4051206ea 100644
--- a/src/main/java/dan200/computercraft/shared/network/NetworkHandler.java
+++ b/src/main/java/dan200/computercraft/shared/network/NetworkHandler.java
@@ -67,6 +67,7 @@ public final class NetworkHandler
         registerMainThread( 12, ComputerDeletedClientMessage::new );
         registerMainThread( 13, ComputerTerminalClientMessage::new );
         registerMainThread( 14, PlayRecordClientMessage.class, PlayRecordClientMessage::new );
+        registerMainThread( 15, TerminalDimensionsClientMessage.class, TerminalDimensionsClientMessage::new );
     }
 
     private static void receive( PacketContext context, PacketByteBuf buffer )
diff --git a/src/main/java/dan200/computercraft/shared/network/client/TerminalDimensionsClientMessage.java b/src/main/java/dan200/computercraft/shared/network/client/TerminalDimensionsClientMessage.java
new file mode 100644
index 000000000..9a26901e2
--- /dev/null
+++ b/src/main/java/dan200/computercraft/shared/network/client/TerminalDimensionsClientMessage.java
@@ -0,0 +1,70 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2022. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+package dan200.computercraft.shared.network.client;
+
+import dan200.computercraft.ComputerCraft;
+import dan200.computercraft.shared.network.NetworkMessage;
+import net.fabricmc.fabric.api.network.PacketContext;
+import net.minecraft.network.PacketByteBuf;
+
+import javax.annotation.Nonnull;
+
+/**
+ * The terminal and portable computer server-side configured dimensions.
+ */
+public class TerminalDimensionsClientMessage implements NetworkMessage
+{
+
+    private final int computerTermWidth;
+    private final int computerTermHeight;
+    private final int pocketTermWidth;
+    private final int pocketTermHeight;
+    private final int monitorWidth;
+    private final int monitorHeight;
+
+    public TerminalDimensionsClientMessage()
+    {
+        this.computerTermWidth = ComputerCraft.computerTermWidth;
+        this.computerTermHeight = ComputerCraft.computerTermHeight;
+        this.pocketTermWidth = ComputerCraft.pocketTermWidth;
+        this.pocketTermHeight = ComputerCraft.pocketTermHeight;
+        this.monitorHeight = ComputerCraft.monitorHeight;
+        this.monitorWidth = ComputerCraft.monitorWidth;
+    }
+
+    public TerminalDimensionsClientMessage( @Nonnull PacketByteBuf buf )
+    {
+        computerTermWidth = buf.readVarInt();
+        computerTermHeight = buf.readVarInt();
+        pocketTermWidth = buf.readVarInt();
+        pocketTermHeight = buf.readVarInt();
+        monitorHeight = buf.readVarInt();
+        monitorWidth = buf.readVarInt();
+    }
+
+    @Override
+    public void toBytes( PacketByteBuf buf )
+    {
+        buf.writeVarInt( computerTermWidth );
+        buf.writeVarInt( computerTermHeight );
+        buf.writeVarInt( pocketTermWidth );
+        buf.writeVarInt( pocketTermHeight );
+        buf.writeVarInt( monitorWidth );
+        buf.writeVarInt( monitorHeight );
+    }
+
+    @Override
+    public void handle( PacketContext context )
+    {
+        ComputerCraft.computerTermWidth = this.computerTermWidth;
+        ComputerCraft.computerTermHeight = this.computerTermHeight;
+        ComputerCraft.pocketTermWidth = this.pocketTermWidth;
+        ComputerCraft.pocketTermHeight = this.pocketTermHeight;
+        ComputerCraft.monitorWidth = this.monitorWidth;
+        ComputerCraft.monitorHeight = this.monitorHeight;
+    }
+
+}
diff --git a/src/main/java/dan200/computercraft/shared/proxy/ComputerCraftProxyCommon.java b/src/main/java/dan200/computercraft/shared/proxy/ComputerCraftProxyCommon.java
index 73d0a8281..250d62f68 100644
--- a/src/main/java/dan200/computercraft/shared/proxy/ComputerCraftProxyCommon.java
+++ b/src/main/java/dan200/computercraft/shared/proxy/ComputerCraftProxyCommon.java
@@ -23,6 +23,7 @@ import dan200.computercraft.shared.data.HasComputerIdLootCondition;
 import dan200.computercraft.shared.data.PlayerCreativeLootCondition;
 import dan200.computercraft.shared.media.items.RecordMedia;
 import dan200.computercraft.shared.network.NetworkHandler;
+import dan200.computercraft.shared.network.client.TerminalDimensionsClientMessage;
 import dan200.computercraft.shared.peripheral.commandblock.CommandBlockPeripheral;
 import dan200.computercraft.shared.peripheral.generic.methods.InventoryMethods;
 import dan200.computercraft.shared.peripheral.modem.wireless.WirelessNetwork;
@@ -34,6 +35,7 @@ import net.fabricmc.fabric.api.command.v1.CommandRegistrationCallback;
 import net.fabricmc.fabric.api.event.lifecycle.v1.ServerBlockEntityEvents;
 import net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents;
 import net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents;
+import net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents;
 import net.fabricmc.fabric.api.resource.ResourceManagerHelper;
 import net.minecraft.block.entity.BlockEntity;
 import net.minecraft.block.entity.CommandBlockBlockEntity;
@@ -128,6 +130,10 @@ public final class ComputerCraftProxyCommon
         // Config
         ServerLifecycleEvents.SERVER_STARTING.register( Config::serverStarting );
         ServerLifecycleEvents.SERVER_STOPPING.register( Config::serverStopping );
+        ServerPlayConnectionEvents.JOIN.register( ( listener, sender, server ) ->
+        {
+            NetworkHandler.sendToPlayer( listener.player, new TerminalDimensionsClientMessage() );
+        } );
 
         TurtleEvent.EVENT_BUS.register( FurnaceRefuelHandler.INSTANCE );
         TurtleEvent.EVENT_BUS.register( new TurtlePermissions() );