diff --git a/device-types/Cisco/cdb-8p.yaml b/device-types/Cisco/cdb-8p.yaml
index e2fc8870..3706b816 100644
--- a/device-types/Cisco/cdb-8p.yaml
+++ b/device-types/Cisco/cdb-8p.yaml
@@ -2,6 +2,7 @@ manufacturer: Cisco
 model: Catalyst Digital Building Switch (PoE+)
 slug: cdb-8p
 part_number: CDB-8P
+u_height: 0
 is_full_depth: false
 subdevice_role: child
 interfaces:
diff --git a/device-types/Cisco/cdb-8u.yaml b/device-types/Cisco/cdb-8u.yaml
index e262a2eb..5ba52b5b 100644
--- a/device-types/Cisco/cdb-8u.yaml
+++ b/device-types/Cisco/cdb-8u.yaml
@@ -2,6 +2,7 @@ manufacturer: Cisco
 model: Catalyst Digital Building Switch (UPoE)
 slug: cdb-8u
 part_number: CDB-8U
+u_height: 0
 is_full_depth: false
 subdevice_role: child
 interfaces: