diff --git a/api/lib/prices.py b/api/lib/prices.py
index dd0b848..f7490c0 100644
--- a/api/lib/prices.py
+++ b/api/lib/prices.py
@@ -3,6 +3,7 @@
 
 from api.lib.utils import round_half_up
 from api.lib.limits import calculate_canvas_limits
+from api.lib import pwinty
 
 
 def m2_price(
@@ -300,17 +301,17 @@ def framed_print_price(
     sku, market, designer=None, reseller=None, inquiry=None, rounded=True, inc_vat=True
 ):
     sku_prices = {
-        "GLOBAL-CFP-12x12": 446,
-        "GLOBAL-CFP-11x14": 478,
-        "GLOBAL-CFP-12x16": 494,
-        "GLOBAL-CFP-16x20": 574,
-        "GLOBAL-CFP-20x20": 690,
-        "GLOBAL-CFP-18x24": 708,
-        "GLOBAL-CFP-20x28": 761,
-        "GLOBAL-CFP-24x32": 831,
-        "GLOBAL-CFP-28x28": 867,
-        "GLOBAL-CFP-24x36": 1035,
-        "GLOBAL-CFP-28x40": 1127,
+        pwinty.GLOBAL_CFP_12x12: 446,
+        pwinty.GLOBAL_CFP_11x14: 478,
+        pwinty.GLOBAL_CFP_12x16: 494,
+        pwinty.GLOBAL_CFP_16x20: 574,
+        pwinty.GLOBAL_CFP_20x20: 690,
+        pwinty.GLOBAL_CFP_18x24: 708,
+        pwinty.GLOBAL_CFP_20x28: 761,
+        pwinty.GLOBAL_CFP_24x32: 831,
+        pwinty.GLOBAL_CFP_28x28: 867,
+        pwinty.GLOBAL_CFP_24x36: 1035,
+        pwinty.GLOBAL_CFP_28x40: 1127,
     }
 
     if not sku in sku_prices:
diff --git a/api/lib/pwinty.py b/api/lib/pwinty.py
new file mode 100644
index 0000000..e391027
--- /dev/null
+++ b/api/lib/pwinty.py
@@ -0,0 +1,25 @@
+GLOBAL_CFP_12x12 = "GLOBAL-CFP-12x12"
+GLOBAL_CFP_11x14 = "GLOBAL-CFP-11x14"
+GLOBAL_CFP_12x16 = "GLOBAL-CFP-12x16"
+GLOBAL_CFP_16x20 = "GLOBAL-CFP-16x20"
+GLOBAL_CFP_20x20 = "GLOBAL-CFP-20x20"
+GLOBAL_CFP_18x24 = "GLOBAL-CFP-18x24"
+GLOBAL_CFP_20x28 = "GLOBAL-CFP-20x28"
+GLOBAL_CFP_24x32 = "GLOBAL-CFP-24x32"
+GLOBAL_CFP_28x28 = "GLOBAL-CFP-28x28"
+GLOBAL_CFP_24x36 = "GLOBAL-CFP-24x36"
+GLOBAL_CFP_28x40 = "GLOBAL-CFP-28x40"
+
+SKU_CODES = [
+    GLOBAL_CFP_12x12,
+    GLOBAL_CFP_11x14,
+    GLOBAL_CFP_12x16,
+    GLOBAL_CFP_16x20,
+    GLOBAL_CFP_20x20,
+    GLOBAL_CFP_18x24,
+    GLOBAL_CFP_20x28,
+    GLOBAL_CFP_24x32,
+    GLOBAL_CFP_28x28,
+    GLOBAL_CFP_24x36,
+    GLOBAL_CFP_28x40,
+]
diff --git a/api/resources/prices.py b/api/resources/prices.py
index 1218157..da2dd5c 100644
--- a/api/resources/prices.py
+++ b/api/resources/prices.py
@@ -1,10 +1,11 @@
 from flask import Blueprint, request, jsonify, abort
 from api.helpers import check_api_key
-from api.validators import validate_territory, validate_number
+from api.validators import validate_territory, validate_number, validate_any_of
 from api.models.inquiry import Inquiry
 from api.models.product import Material, Product
 from api.models.contract_customer import ContractCustomer
 from api.models import market as market_model
+from api.lib import pwinty
 from api.lib.prices import (
     wallpaper_price,
     canvas_price,
@@ -242,6 +243,7 @@ def poster_hanger():
 
 @mod.route("/framed-print", methods=["GET"])
 @validate_territory("territory")
+@validate_any_of("sku", pwinty.SKU_CODES)
 def framed_print():
     sku = request.args.get("sku", type=str)
     market = market_model.from_territory(request.args.get("territory"))
diff --git a/api/validators.py b/api/validators.py
index 056cec4..1fc3967 100644
--- a/api/validators.py
+++ b/api/validators.py
@@ -94,3 +94,22 @@ def validate_territory(*keys):
         return wrapper
 
     return decorator
+
+
+def validate_any_of(key, values):
+    def decorator(f):
+        @wraps(f)
+        def wrapper(*args, **kwargs):
+            _check_parameter_exists(key)
+            value = request.args.get(key)
+            if not value in values:
+                raise ValidationError(
+                    "{} contains an invalid value, must be one of: {}".format(
+                        key, values
+                    )
+                )
+            return f(*args, **kwargs)
+
+        return wrapper
+
+    return decorator
diff --git a/tests/resources/test_prices.py b/tests/resources/test_prices.py
index ea89eb2..b0350a4 100644
--- a/tests/resources/test_prices.py
+++ b/tests/resources/test_prices.py
@@ -4,6 +4,7 @@ from api import create_app, db
 from api.models.product import Material, Product
 from api.models.inquiry import Inquiry
 from api.models.designer import Designer
+from api.lib import pwinty
 
 
 class TestEndpoints(flask_testing.TestCase):
@@ -209,3 +210,13 @@ class TestEndpoints(flask_testing.TestCase):
         self.assert200(response)
         expected = [{"price": 557.5, "price_excl_vat": 446, "sku": "GLOBAL-CFP-12x12"}]
         self.assertEqual(expected, response.json["data"])
+
+    def test_framed_print_invalid_sku(self):
+        response = self.client.get("/prices/framed-print?sku=invalid&territory=SE")
+        self.assert400(response)
+        self.assertEqual(
+            "sku contains an invalid value, must be one of: {}".format(
+                pwinty.SKU_CODES
+            ),
+            response.json["message"],
+        )
diff --git a/tests/test_web.py b/tests/test_web.py
index c0e7beb..1bdd7ed 100644
--- a/tests/test_web.py
+++ b/tests/test_web.py
@@ -12,6 +12,7 @@ from api.validators import (
     validate_number,
     validate_territory,
     validate_jsonschema,
+    validate_any_of,
 )
 
 
@@ -138,3 +139,18 @@ class TestValidators(flask_testing.TestCase):
                 content_type="application/json",
             ).data,
         )
+
+    def test_validate_any_of(self):
+        app = self.app
+
+        @app.route("/", methods=["GET"])
+        @validate_any_of("color", ["red", "green", "blue"])
+        def index():
+            return "ok"
+
+        self.assertEqual(b"No color is specified", self.client.get("/").data)
+        self.assertEqual(
+            b"color contains an invalid value, must be one of: ['red', 'green', 'blue']",
+            self.client.get("/?color=black").data,
+        )
+        self.assertEqual(b"ok", self.client.get("/?color=blue").data)