diff --git a/docs/arguments.md b/docs/arguments.md
index b6bcf96..19c9adb 100644
--- a/docs/arguments.md
+++ b/docs/arguments.md
@@ -15,6 +15,26 @@ This argument allows users to override the output file if it already exists. Mos
 
 This argument adds scroll bars to converted screens. It will ad a horizontal and vertical scroll bar. If this argument is not included, the screen will not contain a scroll bar.
 
+## Site
+
+`--site <name>`
+
+This argument applies site-specific conversion rules during the conversion process. Some facilities have EDM widgets or patterns that have no equivalent in PyDM and should be skipped or handled differently. The `--site` flag lets you opt into these rules without affecting the default conversion behavior.
+
+**Available sites:**
+
+| Site   | Rules Applied |
+|--------|---------------|
+| `slac` | Skips `activeExitButtonClass` (exit buttons present on every SLAC EDM screen that have no PyDM equivalent) |
+
+**Usage:**
+``` bash
+pydmconverter /path/to/file.edl output.ui --site slac
+```
+
+**Adding a new site:**
+To add conversion rules for a new site, create a new module in `pydmconverter/sites/` (e.g. `mysite.py`) that defines a `SKIP_WIDGETS` set, then register it in `pydmconverter/sites/__init__.py`.
+
 ## Help
 
 `-h` or `--help`
diff --git a/docs/user_guide.md b/docs/user_guide.md
index 30e1853..58ee750 100644
--- a/docs/user_guide.md
+++ b/docs/user_guide.md
@@ -69,5 +69,10 @@ pydmconverter /afs/slac/g/lcls/edm/file.edl file.ui`
 ```
 To convert EDM files in a folder called "edm" to PYDM file in the current folder :
 ``` bash
-pydmconverter /afs/slac/g/lcls/edm . .edl`
+pydmconverter /afs/slac/g/lcls/edm . .edl
+```
+
+To convert with SLAC-specific rules (e.g. skipping exit buttons):
+``` bash
+pydmconverter /afs/slac/g/lcls/edm/file.edl file.ui --site slac
 ```
diff --git a/pydmconverter/__main__.py b/pydmconverter/__main__.py
index a5e0162..e626153 100644
--- a/pydmconverter/__main__.py
+++ b/pydmconverter/__main__.py
@@ -29,7 +29,7 @@ def run_gui() -> None:
     subprocess.run(["bash", str(launch_script)], check=True)
 
 
-def run(input_file, output_file, input_file_type=".edl", override=False, scrollable=False):
+def run(input_file, output_file, input_file_type=".edl", override=False, scrollable=False, site=None):
     input_path: Path = Path(input_file)
     output_path: Path = Path(output_file)
 
@@ -39,7 +39,7 @@ def run(input_file, output_file, input_file_type=".edl", override=False, scrolla
         if output_path.is_file() and not override:
             raise FileExistsError(f"Output file '{output_path}' already exists. Use --override or -o to overwrite it.")
         copy_img_files(input_path.parent, output_path.parent)
-        convert(str(input_path), str(output_path), scrollable)
+        convert(str(input_path), str(output_path), scrollable, site=site)
     else:
         if input_file_type[0] != ".":  # prepending . so it will not pick up other file types with same suffix
             input_file_type = "." + input_file_type
@@ -47,7 +47,7 @@ def run(input_file, output_file, input_file_type=".edl", override=False, scrolla
         files_found: int
         files_failed: list[str]
         files_found, files_failed = convert_files_in_folder(
-            input_path, output_path, input_file_type, override, scrollable
+            input_path, output_path, input_file_type, override, scrollable, site=site
         )
 
         if files_found == 0:
@@ -76,7 +76,8 @@ def run_cli(args: argparse.Namespace) -> None:
     input_file_type: str = args.output_type
     override: bool = args.override
     scrollable: bool = args.scrollable
-    run(input_file, output_file, input_file_type, override, scrollable)
+    site: str = args.site
+    run(input_file, output_file, input_file_type, override, scrollable, site=site)
 
 
 """
@@ -98,7 +99,7 @@ def run_cli(args: argparse.Namespace) -> None:
         files_found: int
         files_failed: list[str]
         files_found, files_failed = convert_files_in_folder(
-            input_path, output_path, input_file_type, override, scrollable
+            input_path, output_path, input_file_type, override, scrollable, site=site
         )
 
         if files_found == 0:
@@ -125,7 +126,7 @@ def copy_img_files(input_path: Path, output_path: Path) -> None:
 
 
 def convert_files_in_folder(
-    input_path: Path, output_path: Path, input_file_type: str, override: bool, scrollable: bool
+    input_path: Path, output_path: Path, input_file_type: str, override: bool, scrollable: bool, site=None
 ) -> tuple[int, list[str]]:
     """Recursively runs convert on files in directory and subdirectories
 
@@ -161,7 +162,7 @@ def convert_files_in_folder(
             logging.warning(f"Skipped: {output_file_path} already exists. Use --override or -o to overwrite it.")
         else:
             try:
-                convert(file, output_file_path, scrollable)
+                convert(file, output_file_path, scrollable, site=site)
             except Exception as e:
                 files_failed.append(str(file))
                 logging.warning(f"Failed to convert {file}: {e}")
@@ -171,7 +172,7 @@ def convert_files_in_folder(
     subdirectories = [item for item in input_path.iterdir() if item.is_dir()]
     for subdir in subdirectories:
         sub_found, sub_failed = convert_files_in_folder(
-            subdir, output_path / subdir.name, input_file_type, override, scrollable
+            subdir, output_path / subdir.name, input_file_type, override, scrollable, site=site
         )
         files_found += sub_found
         files_failed += sub_failed
@@ -227,6 +228,12 @@ def main() -> None:
         action="store_true",
         help="create scrollable pydm windows that replicate edm windows (may cause spacing issues for embedded displays)",
     )
+    parser.add_argument(
+        "--site",
+        type=str,
+        default=None,
+        help="Apply site-specific conversion rules (e.g., slac)",
+    )
     args: argparse.Namespace = parser.parse_args()
 
     if args.input_file:
diff --git a/pydmconverter/edm/converter.py b/pydmconverter/edm/converter.py
index 4afe427..1e40ea3 100644
--- a/pydmconverter/edm/converter.py
+++ b/pydmconverter/edm/converter.py
@@ -50,7 +50,7 @@
 }
 
 
-def convert(input_path, output_path, scrollable=False):
+def convert(input_path, output_path, scrollable=False, site=None):
     try:
         edm_parser = EDMFileParser(input_path, output_path)
         pprint(edm_parser.ui, indent=2)
@@ -61,7 +61,7 @@ def convert(input_path, output_path, scrollable=False):
 
     # edm_parser.ui, _, _ = replace_calc_and_loc_in_edm_content(edm_parser.ui, input_path)
 
-    pydm_widgets, used_classes = convert_edm_to_pydm_widgets(edm_parser)
+    pydm_widgets, used_classes = convert_edm_to_pydm_widgets(edm_parser, site=site)
     logger.info(f"Converted EDM objects to {len(pydm_widgets)} PyDM widgets.")
 
     page_header = PageHeader()
diff --git a/pydmconverter/edm/converter_helpers.py b/pydmconverter/edm/converter_helpers.py
index 7e4e2a1..2a8fbd3 100644
--- a/pydmconverter/edm/converter_helpers.py
+++ b/pydmconverter/edm/converter_helpers.py
@@ -423,7 +423,7 @@ def handle_button_polygon_overlaps(pydm_widgets):
     return pydm_widgets
 
 
-def convert_edm_to_pydm_widgets(parser: EDMFileParser):
+def convert_edm_to_pydm_widgets(parser: EDMFileParser, site=None):
     """
     Converts an EDMFileParser object into a collection of PyDM widget instances.
 
@@ -437,6 +437,10 @@ def convert_edm_to_pydm_widgets(parser: EDMFileParser):
     List[Union[widgets.PyDMWidgetBase, widgets.PyDMGroup]]
         A list of PyDM widget instances representing the EDM UI.
     """
+    from pydmconverter.sites import get_skip_widgets
+
+    skip_widgets = get_skip_widgets(site)
+
     pydm_widgets = []
     used_classes = set()
     color_list_filepath = search_color_list()
@@ -529,6 +533,9 @@ def traverse_group(
                 )
 
             elif isinstance(obj, EDMObject):
+                if obj.name.lower() in skip_widgets:
+                    logger.info(f"Skipping {obj.name} (site rule: {site})")
+                    continue
                 if obj.name.lower() == "activelineclass":
                     widget_type = get_polyline_widget_type(obj)
                 elif obj.name.lower() == "activearcclass":
diff --git a/pydmconverter/sites/__init__.py b/pydmconverter/sites/__init__.py
new file mode 100644
index 0000000..3a70d70
--- /dev/null
+++ b/pydmconverter/sites/__init__.py
@@ -0,0 +1,12 @@
+from typing import Optional, Set
+
+
+def get_skip_widgets(site: Optional[str]) -> Set[str]:
+    """Return set of lowercase EDM widget class names to skip for the given site."""
+    if site is None:
+        return set()
+    if site == "slac":
+        from pydmconverter.sites.slac import SKIP_WIDGETS
+
+        return SKIP_WIDGETS
+    raise ValueError(f"Unknown site: {site}")
diff --git a/pydmconverter/sites/slac.py b/pydmconverter/sites/slac.py
new file mode 100644
index 0000000..3f34731
--- /dev/null
+++ b/pydmconverter/sites/slac.py
@@ -0,0 +1,2 @@
+# EDM widget class names (lowercase) to skip during conversion at SLAC
+SKIP_WIDGETS = {"activeexitbuttonclass"}
diff --git a/tests/test_sites.py b/tests/test_sites.py
new file mode 100644
index 0000000..702b5d3
--- /dev/null
+++ b/tests/test_sites.py
@@ -0,0 +1,16 @@
+import pytest
+from pydmconverter.sites import get_skip_widgets
+
+
+def test_get_skip_widgets_none():
+    assert get_skip_widgets(None) == set()
+
+
+def test_get_skip_widgets_slac():
+    result = get_skip_widgets("slac")
+    assert "activeexitbuttonclass" in result
+
+
+def test_get_skip_widgets_unknown():
+    with pytest.raises(ValueError, match="Unknown site"):
+        get_skip_widgets("unknown")