diff --git a/frontend/public/schemas/20251121/linkml/manifest.json b/frontend/public/schemas/20251121/linkml/manifest.json
index d77e469c1d..3260a6ea7d 100644
--- a/frontend/public/schemas/20251121/linkml/manifest.json
+++ b/frontend/public/schemas/20251121/linkml/manifest.json
@@ -1,12 +1,12 @@
 {
-  "generated": "2026-01-11T20:15:00.305Z",
+  "generated": "2026-01-11T20:16:54.942Z",
   "schemaRoot": "/schemas/20251121/linkml",
-  "totalFiles": 2865,
+  "totalFiles": 2869,
   "categoryCounts": {
     "main": 4,
     "class": 630,
     "enum": 147,
-    "slot": 2080,
+    "slot": 2084,
     "module": 4
   },
   "categories": [
@@ -6367,6 +6367,26 @@
           "path": "modules/slots/environmental_requirement.yaml",
           "category": "slot"
         },
+        {
+          "name": "environmental_zone_type_code",
+          "path": "modules/slots/environmental_zone_type_code.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "environmental_zone_type_description",
+          "path": "modules/slots/environmental_zone_type_description.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "environmental_zone_type_id",
+          "path": "modules/slots/environmental_zone_type_id.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "environmental_zone_type_label",
+          "path": "modules/slots/environmental_zone_type_label.yaml",
+          "category": "slot"
+        },
         {
           "name": "equipment_type",
           "path": "modules/slots/equipment_type.yaml",
diff --git a/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_code.yaml b/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_code.yaml
new file mode 100644
index 0000000000..a827a260ce
--- /dev/null
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_code.yaml
@@ -0,0 +1,37 @@
+id: https://nde.nl/ontology/hc/slot/environmental_zone_type_code
+name: environmental_zone_type_code_slot
+title: Environmental Zone Type Code Slot
+description: |
+  Short code slot for environmental zone type classifications.
+  
+  Codes align with legacy EnvironmentalZoneTypeEnum values for compatibility.
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+
+imports:
+  - linkml:types
+
+default_prefix: hc
+
+slots:
+  environmental_zone_type_code:
+    description: |
+      Short code for this environmental zone type (uppercase, underscore-separated).
+      
+      SKOS: notation for coding system identifiers.
+      
+      Codes align with EnvironmentalZoneTypeEnum values for backward compatibility.
+    range: string
+    slot_uri: skos:notation
+    required: true
+    pattern: "^[A-Z][A-Z0-9_]*$"
+    examples:
+      - value: ARCHIVE_STANDARD
+        description: Standard archive storage code
+      - value: COLD_STORAGE
+        description: Cold storage code
+      - value: PHOTOGRAPHIC
+        description: Photographic materials storage code
diff --git a/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_description.yaml b/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_description.yaml
new file mode 100644
index 0000000000..a163dbdd9a
--- /dev/null
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_description.yaml
@@ -0,0 +1,37 @@
+id: https://nde.nl/ontology/hc/slot/environmental_zone_type_description
+name: environmental_zone_type_description_slot
+title: Environmental Zone Type Description Slot
+description: |
+  Detailed description slot for environmental zone type classifications.
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+
+imports:
+  - linkml:types
+
+default_prefix: hc
+
+slots:
+  environmental_zone_type_description:
+    description: |
+      Detailed description of this environmental zone type.
+      
+      Should include:
+      - Purpose and function
+      - Recommended environmental parameters
+      - Typical materials/contents
+      - Key preservation considerations
+      - Reference to applicable standards
+      
+      SKOS: definition for formal description.
+    range: string
+    slot_uri: skos:definition
+    examples:
+      - value: |
+          Standard archive storage environment for paper-based materials.
+          Recommended conditions per ISO 11799: Temperature 16-20°C (target 18°C),
+          Relative humidity 45-55% (target 50%), Light < 50 lux.
+        description: Archive standard storage description
diff --git a/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_id.yaml b/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_id.yaml
new file mode 100644
index 0000000000..8d9698cd42
--- /dev/null
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_id.yaml
@@ -0,0 +1,32 @@
+id: https://nde.nl/ontology/hc/slot/environmental_zone_type_id
+name: environmental_zone_type_id_slot
+title: Environmental Zone Type ID Slot
+description: |
+  Unique identifier slot for environmental zone type classifications.
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  dcterms: http://purl.org/dc/terms/
+
+imports:
+  - linkml:types
+
+default_prefix: hc
+
+slots:
+  environmental_zone_type_id:
+    description: |
+      Unique identifier for this environmental zone type.
+      
+      Format: URI following NDE Heritage Custodian ontology conventions.
+      Example: https://nde.nl/ontology/hc/environmental-zone-type/archive-standard
+    range: uriorcurie
+    slot_uri: dcterms:identifier
+    identifier: true
+    required: true
+    examples:
+      - value: https://nde.nl/ontology/hc/environmental-zone-type/archive-standard
+        description: Standard archive storage environment type
+      - value: https://nde.nl/ontology/hc/environmental-zone-type/cold-storage
+        description: Cold storage environment type
diff --git a/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_label.yaml b/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_label.yaml
new file mode 100644
index 0000000000..1ef240d29e
--- /dev/null
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/environmental_zone_type_label.yaml
@@ -0,0 +1,32 @@
+id: https://nde.nl/ontology/hc/slot/environmental_zone_type_label
+name: environmental_zone_type_label_slot
+title: Environmental Zone Type Label Slot
+description: |
+  Human-readable label slot for environmental zone type classifications.
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  skos: http://www.w3.org/2004/02/skos/core#
+
+imports:
+  - linkml:types
+
+default_prefix: hc
+
+slots:
+  environmental_zone_type_label:
+    description: |
+      Human-readable label for this environmental zone type.
+      
+      SKOS: prefLabel for preferred lexical label.
+    range: string
+    slot_uri: skos:prefLabel
+    required: true
+    examples:
+      - value: Archive Standard Storage Environment
+        description: Label for standard archive storage
+      - value: Cold Storage Environment
+        description: Label for refrigerated storage
+      - value: Photographic Materials Storage Environment
+        description: Label for photographic storage