diff --git a/tests/common.py b/tests/common.py
index 6e298a6..9b0ee27 100644
--- a/tests/common.py
+++ b/tests/common.py
@@ -118,6 +118,7 @@ def __init__(self) -> None:
             p.RequestCommand.SEND_UNICAST: self.on_send_unicast,
             p.RequestCommand.SEND_BROADCAST: self.on_send_broadcast,
             p.RequestCommand.SEND_GROUPCAST: self.on_send_groupcast,
+            p.RequestCommand.SEND_GPDF: self.on_send_gpdf,
             p.RequestCommand.CANCEL_REQUEST: self.on_cancel_request,
             p.RequestCommand.PERMIT_JOINS: self.on_empty_ok,
             p.RequestCommand.SET_CHANNEL: self.on_empty_ok,
@@ -316,6 +317,13 @@ async def on_send_groupcast(
         )
         return None
 
+    async def on_send_gpdf(self, request: p.SendGpdf, request_id: int) -> None:
+        # Sent once its GPD listened
+        await self.send_notification(
+            p.SendConfirm(status=p.SendStatus.SUCCESS), request_id
+        )
+        return None
+
     async def on_cancel_request(
         self, request: p.CancelRequest, request_id: int
     ) -> p.CancelResult:
diff --git a/tests/test_application.py b/tests/test_application.py
index 00fdb12..a92a084 100644
--- a/tests/test_application.py
+++ b/tests/test_application.py
@@ -919,6 +919,74 @@ async def no_route(request: p.SendUnicast, request_id: int) -> None:
         )
 
 
+@pytest.mark.parametrize(
+    ("target", "kind", "src_id", "gpd_ieee", "endpoint"),
+    [
+        (
+            zgp.types.SrcID(0x12345678),
+            p.wire.GpdfTargetKind.SRC_ID,
+            0x12345678,
+            None,
+            None,
+        ),
+        (
+            (DEVICE_IEEE, 0x01),
+            p.wire.GpdfTargetKind.IEEE,
+            None,
+            DEVICE_IEEE,
+            0x01,
+        ),
+        (None, p.wire.GpdfTargetKind.MAINTENANCE, None, None, None),
+    ],
+)
+async def test_send_gpdf(
+    app: ControllerApplication,
+    server: SyntheticZiggurat,
+    target: zgp.types.SrcID | tuple[t.EUI64, int] | None,
+    kind: p.wire.GpdfTargetKind,
+    src_id: int | None,
+    gpd_ieee: t.EUI64 | None,
+    endpoint: int | None,
+) -> None:
+    await app.send_gpdf(
+        target=target,
+        command_id=zgp.types.GPDCommandID(0xFE),
+        payload=b"\x00",
+        channel=15,
+        lifetime=timedelta(seconds=20),
+    )
+
+    send = server.sent(p.SendGpdf)[-1]
+    assert send.target == kind
+    assert send.src_id == src_id
+    assert send.gpd_ieee == gpd_ieee
+    assert send.endpoint == endpoint
+    assert send.channel == 15
+    assert send.lifetime_ms == 20_000
+    assert send.command_id == 0xFE
+    assert bytes(send.payload) == b"\x00"
+
+
+async def test_send_gpdf_not_sent(
+    app: ControllerApplication, server: SyntheticZiggurat
+) -> None:
+    async def expired(request: p.SendGpdf, request_id: int) -> None:
+        await server.send_notification(
+            p.SendConfirm(status=p.SendStatus.GPDF_EXPIRED), request_id
+        )
+
+    server.handlers[p.RequestCommand.SEND_GPDF] = expired
+
+    with pytest.raises(DeliveryError, match="GPDF_EXPIRED"):
+        await app.send_gpdf(
+            target=zgp.types.SrcID(0x12345678),
+            command_id=zgp.types.GPDCommandID(0xFE),
+            payload=b"\x00",
+            channel=15,
+            lifetime=timedelta(seconds=20),
+        )
+
+
 async def test_add_endpoint(
     app: ControllerApplication, server: SyntheticZiggurat
 ) -> None:
diff --git a/tests/test_protocol.py b/tests/test_protocol.py
index 9a53d73..068c218 100644
--- a/tests/test_protocol.py
+++ b/tests/test_protocol.py
@@ -4,6 +4,7 @@
 
 import pytest
 import zigpy.types as t
+from zigpy.zgp.types import SrcID
 
 from zigpy_ziggurat.zigbee import protocol as p
 
@@ -119,3 +120,27 @@ def test_load_request_round_trip(request_obj: p.Request) -> None:
     parsed, rest = type(request_obj).deserialize(request_obj.serialize())
     assert rest == b""
     assert parsed == request_obj
+
+
+@pytest.mark.parametrize(
+    ("target", "expected"),
+    [
+        # Target kind in bits 0-1 of the first byte
+        (SrcID(0x12345678), bytes.fromhex("00 78563412 0F 204E0000 FE 01 00")),
+        ((_IEEE, 0x01), bytes.fromhex("01 7766554433221100 01 0F 204E0000 FE 01 00")),
+        (None, bytes.fromhex("02 0F 204E0000 FE 01 00")),
+    ],
+)
+def test_send_gpdf_build(
+    target: SrcID | tuple[t.EUI64, int] | None, expected: bytes
+) -> None:
+    send = p.SendGpdf.build(
+        target=target,
+        command_id=0xFE,
+        payload=b"\x00",
+        channel=15,
+        lifetime=timedelta(seconds=20),
+    )
+
+    assert send.serialize() == expected
+    assert p.SendGpdf.deserialize(expected) == (send, b"")
diff --git a/zigpy_ziggurat/zigbee/api.py b/zigpy_ziggurat/zigbee/api.py
index d2c4102..02ec32c 100644
--- a/zigpy_ziggurat/zigbee/api.py
+++ b/zigpy_ziggurat/zigbee/api.py
@@ -124,7 +124,7 @@ async def request(self, request: p.Request) -> p.Response | None:
             self._pending.pop(request_id, None)
 
     async def request_confirmed(
-        self, send: p.SendUnicast | p.SendBroadcast | p.SendGroupcast
+        self, send: p.SendUnicast | p.SendBroadcast | p.SendGroupcast | p.SendGpdf
     ) -> None:
         """Send and await the terminal confirmation."""
 
diff --git a/zigpy_ziggurat/zigbee/application.py b/zigpy_ziggurat/zigbee/application.py
index 7a5ce36..9b8ccbd 100644
--- a/zigpy_ziggurat/zigbee/application.py
+++ b/zigpy_ziggurat/zigbee/application.py
@@ -18,6 +18,7 @@
 import zigpy.state
 import zigpy.types as t
 import zigpy.zdo.types as zdo_t
+from zigpy.zgp.types import GPDCommandID, SrcID
 from zigpy.zgp.util import parse_gpdf
 
 from zigpy_ziggurat.config import CONF_TUNABLES, CONF_ZIGGURAT_CONFIG, CONFIG_SCHEMA
@@ -836,6 +837,31 @@ def _handle_received_gpdf(self, command: p.ReceivedGpdf) -> None:
 
         self.gp_packet_received(packet)
 
+    async def _send_gpdf(
+        self,
+        *,
+        target: SrcID | tuple[t.EUI64, int] | None,
+        command_id: GPDCommandID,
+        payload: bytes,
+        channel: int,
+        lifetime: timedelta,
+    ) -> None:
+        # Ziggurat holds the GPDF until its GPD sends a GPDF with RxAfterTx, then sends
+        # it in the GPD's receive window
+        assert self._api is not None
+        _, status = await self._api.request_confirmed(
+            p.SendGpdf.build(
+                target=target,
+                command_id=command_id,
+                payload=payload,
+                channel=channel,
+                lifetime=lifetime,
+            )
+        )
+
+        if status != p.SendStatus.SUCCESS:
+            raise DeliveryError(f"GPDF not sent: {status.name}")
+
     async def send_packet(self, packet: t.ZigbeePacket) -> None:
         dst = packet.dst
         assert dst is not None and dst.address is not None
diff --git a/zigpy_ziggurat/zigbee/protocol.py b/zigpy_ziggurat/zigbee/protocol.py
index f5c6f87..6867361 100644
--- a/zigpy_ziggurat/zigbee/protocol.py
+++ b/zigpy_ziggurat/zigbee/protocol.py
@@ -7,6 +7,7 @@
 
 from zigpy.exceptions import DeliveryError
 import zigpy.types as t
+from zigpy.zgp.types import SrcID
 
 from zigpy_ziggurat.zigbee import wire
 
@@ -296,6 +297,47 @@ def build(
         )
 
 
+class SendGpdf(Request, wire.SendGpdfPayload):
+    command = RequestCommand.SEND_GPDF
+
+    @classmethod
+    def build(
+        cls,
+        *,
+        target: SrcID | tuple[t.EUI64, int] | None,
+        command_id: int,
+        payload: bytes,
+        channel: int,
+        lifetime: timedelta,
+    ) -> SendGpdf:
+        src_id: t.uint32_t | None = None
+        gpd_ieee: t.EUI64 | None = None
+        endpoint: t.uint8_t | None = None
+
+        match target:
+            case None:
+                kind = wire.GpdfTargetKind.MAINTENANCE
+            case (ieee, ep):
+                kind = wire.GpdfTargetKind.IEEE
+                gpd_ieee = ieee
+                endpoint = t.uint8_t(ep)
+            case _:
+                kind = wire.GpdfTargetKind.SRC_ID
+                src_id = t.uint32_t(target)
+
+        return cls(
+            target=kind,
+            reserved=t.uint6_t(0),
+            src_id=src_id,
+            gpd_ieee=gpd_ieee,
+            endpoint=endpoint,
+            channel=t.uint8_t(channel),
+            lifetime_ms=t.uint32_t(lifetime // timedelta(milliseconds=1)),
+            command_id=t.uint8_t(command_id),
+            payload=t.LVBytes(payload),
+        )
+
+
 class PermitJoins(Request, wire.PermitJoinsPayload):
     command = RequestCommand.PERMIT_JOINS
 
diff --git a/zigpy_ziggurat/zigbee/wire.py b/zigpy_ziggurat/zigbee/wire.py
index 8efb829..d66a55c 100644
--- a/zigpy_ziggurat/zigbee/wire.py
+++ b/zigpy_ziggurat/zigbee/wire.py
@@ -42,6 +42,7 @@ class RequestCommand(t.enum8):
     SET_NWK_UPDATE_ID = 0x36
     SET_PROVISIONAL_KEY = 0x37
     SET_TUNABLE = 0x38
+    SEND_GPDF = 0x39
     ENERGY_SCAN = 0x40
     NETWORK_SCAN = 0x41
     PACKET_CAPTURE = 0x42
@@ -312,6 +313,30 @@ class SendGroupcastPayload(t.Struct):
     asdu: t.LongOctetString
 
 
+class GpdfTargetKind(t.enum2):
+    SRC_ID = 0
+    IEEE = 1
+    MAINTENANCE = 2
+
+
+class SendGpdfPayload(t.Struct):
+    target: GpdfTargetKind
+    reserved: t.uint6_t
+    src_id: t.uint32_t = t.StructField(  # type: ignore[assignment]
+        requires=lambda s: cast(SendGpdfPayload, s).target in (GpdfTargetKind.SRC_ID,)
+    )
+    gpd_ieee: t.EUI64 = t.StructField(  # type: ignore[assignment]
+        requires=lambda s: cast(SendGpdfPayload, s).target in (GpdfTargetKind.IEEE,)
+    )
+    endpoint: t.uint8_t = t.StructField(  # type: ignore[assignment]
+        requires=lambda s: cast(SendGpdfPayload, s).target in (GpdfTargetKind.IEEE,)
+    )
+    channel: t.uint8_t
+    lifetime_ms: t.uint32_t
+    command_id: t.uint8_t
+    payload: t.LVBytes
+
+
 class CancelRequestPayload(t.Struct):
     request_id: t.uint16_t
 
@@ -430,6 +455,8 @@ class SendStatus(t.enum8):
     FRAME_BUDGET_EXHAUSTED = 10
     CANCELLED = 11
     RADIO_ERROR = 12
+    GPDF_EXPIRED = 14
+    GPDF_REPLACED = 15
 
 
 class SendConfirmPayload(t.Struct):