diff --git a/comfyui_manager/glob/constants.py b/comfyui_manager/glob/constants.py
index 87d28cb6..9ec94e54 100644
--- a/comfyui_manager/glob/constants.py
+++ b/comfyui_manager/glob/constants.py
@@ -33,3 +33,22 @@ model_dir_name_map = {
     "unet": "diffusion_models",
     "diffusion_model": "diffusion_models",
 }
+
+# List of all model directory names used for checking installed models
+MODEL_DIR_NAMES = [
+    "checkpoints",
+    "loras",
+    "vae",
+    "text_encoders",
+    "diffusion_models",
+    "clip_vision",
+    "embeddings",
+    "diffusers",
+    "vae_approx",
+    "controlnet",
+    "gligen",
+    "upscale_models",
+    "hypernetworks",
+    "photomaker",
+    "classifiers",
+]
diff --git a/comfyui_manager/glob/manager_server.py b/comfyui_manager/glob/manager_server.py
index 0f9615ae..b0842273 100644
--- a/comfyui_manager/glob/manager_server.py
+++ b/comfyui_manager/glob/manager_server.py
@@ -6,7 +6,6 @@ Handles task queue management, custom node operations, model installation, and s
 """
 
 import asyncio
-import concurrent
 import copy
 import heapq
 import json
@@ -1365,82 +1364,7 @@ async def installed_list(request):
     return web.json_response(res, content_type="application/json")
 
 
-def check_model_installed(json_obj):
-    def is_exists(model_dir_name, filename, url):
-        if filename == "<huggingface>":
-            filename = os.path.basename(url)
-
-        dirs = folder_paths.get_folder_paths(model_dir_name)
-
-        for x in dirs:
-            if os.path.exists(os.path.join(x, filename)):
-                return True
-
-        return False
-
-    model_dir_names = [
-        "checkpoints",
-        "loras",
-        "vae",
-        "text_encoders",
-        "diffusion_models",
-        "clip_vision",
-        "embeddings",
-        "diffusers",
-        "vae_approx",
-        "controlnet",
-        "gligen",
-        "upscale_models",
-        "hypernetworks",
-        "photomaker",
-        "classifiers",
-    ]
-
-    total_models_files = set()
-    for x in model_dir_names:
-        for y in folder_paths.get_filename_list(x):
-            total_models_files.add(y)
-
-    def process_model_phase(item):
-        if (
-            "diffusion" not in item["filename"]
-            and "pytorch" not in item["filename"]
-            and "model" not in item["filename"]
-        ):
-            # non-general name case
-            if item["filename"] in total_models_files:
-                item["installed"] = "True"
-                return
-
-        if item["save_path"] == "default":
-            model_dir_name = model_dir_name_map.get(item["type"].lower())
-            if model_dir_name is not None:
-                item["installed"] = str(
-                    is_exists(model_dir_name, item["filename"], item["url"])
-                )
-            else:
-                item["installed"] = "False"
-        else:
-            model_dir_name = item["save_path"].split("/")[0]
-            if model_dir_name in folder_paths.folder_names_and_paths:
-                if is_exists(model_dir_name, item["filename"], item["url"]):
-                    item["installed"] = "True"
-
-            if "installed" not in item:
-                if item["filename"] == "<huggingface>":
-                    filename = os.path.basename(item["url"])
-                else:
-                    filename = item["filename"]
-
-                fullpath = os.path.join(
-                    folder_paths.models_dir, item["save_path"], filename
-                )
-
-                item["installed"] = "True" if os.path.exists(fullpath) else "False"
-
-    with concurrent.futures.ThreadPoolExecutor(8) as executor:
-        for item in json_obj["models"]:
-            executor.submit(process_model_phase, item)
+# Function moved to model_utils.py
 
 
 @routes.get("/v2/snapshot/getlist")
@@ -1725,28 +1649,7 @@ async def comfyui_switch_version(request):
         return web.Response(status=400)
 
 
-async def check_whitelist_for_model(item):
-    json_obj = await core.get_data_by_mode(ManagerDatabaseSource.cache.value, "model-list.json")
-
-    for x in json_obj.get("models", []):
-        if (
-            x["save_path"] == item["save_path"]
-            and x["base"] == item["base"]
-            and x["filename"] == item["filename"]
-        ):
-            return True
-
-    json_obj = await core.get_data_by_mode(ManagerDatabaseSource.local.value, "model-list.json")
-
-    for x in json_obj.get("models", []):
-        if (
-            x["save_path"] == item["save_path"]
-            and x["base"] == item["base"]
-            and x["filename"] == item["filename"]
-        ):
-            return True
-
-    return False
+# Function moved to model_utils.py
 
 
 @routes.post("/v2/manager/queue/install_model")
diff --git a/comfyui_manager/glob/utils/model_utils.py b/comfyui_manager/glob/utils/model_utils.py
index 9fffa3de..2225ec07 100644
--- a/comfyui_manager/glob/utils/model_utils.py
+++ b/comfyui_manager/glob/utils/model_utils.py
@@ -1,9 +1,10 @@
 import os
 import logging
+import concurrent.futures
 import folder_paths
 
 from comfyui_manager.glob import manager_core as core
-from comfyui_manager.glob.constants import model_dir_name_map
+from comfyui_manager.glob.constants import model_dir_name_map, MODEL_DIR_NAMES
 
 
 def get_model_dir(data, show_log=False):
@@ -72,3 +73,89 @@ def get_model_path(data, show_log=False):
             return os.path.join(base_model, os.path.basename(data["url"]))
         else:
             return os.path.join(base_model, data["filename"])
+
+
+def check_model_installed(json_obj):
+    def is_exists(model_dir_name, filename, url):
+        if filename == "<huggingface>":
+            filename = os.path.basename(url)
+
+        dirs = folder_paths.get_folder_paths(model_dir_name)
+
+        for x in dirs:
+            if os.path.exists(os.path.join(x, filename)):
+                return True
+
+        return False
+
+    total_models_files = set()
+    for x in MODEL_DIR_NAMES:
+        for y in folder_paths.get_filename_list(x):
+            total_models_files.add(y)
+
+    def process_model_phase(item):
+        if (
+            "diffusion" not in item["filename"]
+            and "pytorch" not in item["filename"]
+            and "model" not in item["filename"]
+        ):
+            # non-general name case
+            if item["filename"] in total_models_files:
+                item["installed"] = "True"
+                return
+
+        if item["save_path"] == "default":
+            model_dir_name = model_dir_name_map.get(item["type"].lower())
+            if model_dir_name is not None:
+                item["installed"] = str(
+                    is_exists(model_dir_name, item["filename"], item["url"])
+                )
+            else:
+                item["installed"] = "False"
+        else:
+            model_dir_name = item["save_path"].split("/")[0]
+            if model_dir_name in folder_paths.folder_names_and_paths:
+                if is_exists(model_dir_name, item["filename"], item["url"]):
+                    item["installed"] = "True"
+
+            if "installed" not in item:
+                if item["filename"] == "<huggingface>":
+                    filename = os.path.basename(item["url"])
+                else:
+                    filename = item["filename"]
+
+                fullpath = os.path.join(
+                    folder_paths.models_dir, item["save_path"], filename
+                )
+
+                item["installed"] = "True" if os.path.exists(fullpath) else "False"
+
+    with concurrent.futures.ThreadPoolExecutor(8) as executor:
+        for item in json_obj["models"]:
+            executor.submit(process_model_phase, item)
+
+
+async def check_whitelist_for_model(item):
+    from comfyui_manager.data_models import ManagerDatabaseSource
+    
+    json_obj = await core.get_data_by_mode(ManagerDatabaseSource.cache.value, "model-list.json")
+
+    for x in json_obj.get("models", []):
+        if (
+            x["save_path"] == item["save_path"]
+            and x["base"] == item["base"]
+            and x["filename"] == item["filename"]
+        ):
+            return True
+
+    json_obj = await core.get_data_by_mode(ManagerDatabaseSource.local.value, "model-list.json")
+
+    for x in json_obj.get("models", []):
+        if (
+            x["save_path"] == item["save_path"]
+            and x["base"] == item["base"]
+            and x["filename"] == item["filename"]
+        ):
+            return True
+
+    return False