diff --git a/src/app/modules/angular-slickgrid/constants.ts b/src/app/modules/angular-slickgrid/constants.ts
index 131b3d884..598818b99 100644
--- a/src/app/modules/angular-slickgrid/constants.ts
+++ b/src/app/modules/angular-slickgrid/constants.ts
@@ -1,7 +1,8 @@
 import { Locale } from './models/locale.interface';
 
 export class Constants {
-  static locales: Locale = {
+  // English Locale texts when using only 1 Locale instead of I18N
+  static readonly locales: Locale = {
     TEXT_ALL_SELECTED: 'All Selected',
     TEXT_CANCEL: 'Cancel',
     TEXT_CLEAR_ALL_FILTERS: 'Clear all Filters',
@@ -40,14 +41,20 @@ export class Constants {
     TEXT_TOGGLE_PRE_HEADER_ROW: 'Toggle Pre-Header Row',
     TEXT_X_OF_Y_SELECTED: '# of % selected',
   };
-  static VALIDATION_REQUIRED_FIELD = 'Field is required';
-  static VALIDATION_EDITOR_VALID_NUMBER = 'Please enter a valid number';
-  static VALIDATION_EDITOR_VALID_INTEGER = 'Please enter a valid integer number';
-  static VALIDATION_EDITOR_INTEGER_BETWEEN = 'Please enter a valid integer number between {{minValue}} and {{maxValue}}';
-  static VALIDATION_EDITOR_INTEGER_MAX = 'Please enter a valid integer number that is lower than {{maxValue}}';
-  static VALIDATION_EDITOR_INTEGER_MIN = 'Please enter a valid integer number that is greater than {{minValue}}';
-  static VALIDATION_EDITOR_NUMBER_BETWEEN = 'Please enter a valid number between {{minValue}} and {{maxValue}}';
-  static VALIDATION_EDITOR_NUMBER_MAX = 'Please enter a valid number that is lower than {{maxValue}}';
-  static VALIDATION_EDITOR_NUMBER_MIN = 'Please enter a valid number that is greater than {{minValue}}';
-  static VALIDATION_EDITOR_DECIMAL_BETWEEN = 'Please enter a valid number with a maximum of {{maxDecimal}} decimals';
+
+  // some Validation default texts
+  static readonly VALIDATION_REQUIRED_FIELD = 'Field is required';
+  static readonly VALIDATION_EDITOR_VALID_NUMBER = 'Please enter a valid number';
+  static readonly VALIDATION_EDITOR_VALID_INTEGER = 'Please enter a valid integer number';
+  static readonly VALIDATION_EDITOR_INTEGER_BETWEEN = 'Please enter a valid integer number between {{minValue}} and {{maxValue}}';
+  static readonly VALIDATION_EDITOR_INTEGER_MAX = 'Please enter a valid integer number that is lower than {{maxValue}}';
+  static readonly VALIDATION_EDITOR_INTEGER_MAX_INCLUSIVE = 'Please enter a valid integer number that is lower than or equal to {{maxValue}}';
+  static readonly VALIDATION_EDITOR_INTEGER_MIN = 'Please enter a valid integer number that is greater than {{minValue}}';
+  static readonly VALIDATION_EDITOR_INTEGER_MIN_INCLUSIVE = 'Please enter a valid integer number that is greater than or equal to {{minValue}}';
+  static readonly VALIDATION_EDITOR_NUMBER_BETWEEN = 'Please enter a valid number between {{minValue}} and {{maxValue}}';
+  static readonly VALIDATION_EDITOR_NUMBER_MAX = 'Please enter a valid number that is lower than {{maxValue}}';
+  static readonly VALIDATION_EDITOR_NUMBER_MAX_INCLUSIVE = 'Please enter a valid number that is lower than or equal to {{maxValue}}';
+  static readonly VALIDATION_EDITOR_NUMBER_MIN = 'Please enter a valid number that is greater than {{minValue}}';
+  static readonly VALIDATION_EDITOR_NUMBER_MIN_INCLUSIVE = 'Please enter a valid number that is greater than or equal to {{minValue}}';
+  static readonly VALIDATION_EDITOR_DECIMAL_BETWEEN = 'Please enter a valid number with a maximum of {{maxDecimal}} decimals';
 }
diff --git a/src/app/modules/angular-slickgrid/editorValidators/floatValidator.ts b/src/app/modules/angular-slickgrid/editorValidators/floatValidator.ts
index 009afb170..95d34695c 100644
--- a/src/app/modules/angular-slickgrid/editorValidators/floatValidator.ts
+++ b/src/app/modules/angular-slickgrid/editorValidators/floatValidator.ts
@@ -50,13 +50,15 @@ export function floatValidator(inputValue: any, options: FloatValidatorOptions):
     // when decimal value is bigger than 0, we only accept the decimal values as that value set
     // for example if we set decimalPlaces to 2, we will only accept numbers between 0 and 2 decimals
     isValid = false;
-    outputMsg = errorMsg || Constants.VALIDATION_EDITOR_NUMBER_MIN.replace(/{{minValue}}/gi, (matched) => mapValidation[matched]);
+    const defaultErrorMsg = operatorConditionalType === 'inclusive' ? Constants.VALIDATION_EDITOR_NUMBER_MIN_INCLUSIVE : Constants.VALIDATION_EDITOR_NUMBER_MIN;
+    outputMsg = errorMsg || defaultErrorMsg.replace(/{{minValue}}/gi, (matched) => mapValidation[matched]);
   } else if (maxValue !== undefined && floatNumber !== null && ((operatorConditionalType === 'exclusive' && floatNumber >= maxValue) || (operatorConditionalType === 'inclusive' && floatNumber > maxValue))) {
     // MAX VALUE ONLY
     // when decimal value is bigger than 0, we only accept the decimal values as that value set
     // for example if we set decimalPlaces to 2, we will only accept numbers between 0 and 2 decimals
     isValid = false;
-    outputMsg = errorMsg || Constants.VALIDATION_EDITOR_NUMBER_MAX.replace(/{{maxValue}}/gi, (matched) => mapValidation[matched]);
+    const defaultErrorMsg = operatorConditionalType === 'inclusive' ? Constants.VALIDATION_EDITOR_NUMBER_MAX_INCLUSIVE : Constants.VALIDATION_EDITOR_NUMBER_MAX;
+    outputMsg = errorMsg || defaultErrorMsg.replace(/{{maxValue}}/gi, (matched) => mapValidation[matched]);
   } else if ((decPlaces > 0 && !new RegExp(`^[-+]?(\\d*(\\.)?(\\d){0,${decPlaces}})$`).test(inputValue))) {
     // when decimal value is bigger than 0, we only accept the decimal values as that value set
     // for example if we set decimalPlaces to 2, we will only accept numbers between 0 and 2 decimals
diff --git a/src/app/modules/angular-slickgrid/editorValidators/integerValidator.ts b/src/app/modules/angular-slickgrid/editorValidators/integerValidator.ts
index 8c797f7df..68bbfae7d 100644
--- a/src/app/modules/angular-slickgrid/editorValidators/integerValidator.ts
+++ b/src/app/modules/angular-slickgrid/editorValidators/integerValidator.ts
@@ -48,13 +48,15 @@ export function integerValidator(inputValue: any, options: IntegerValidatorOptio
     // when decimal value is bigger than 0, we only accept the decimal values as that value set
     // for example if we set decimalPlaces to 2, we will only accept numbers between 0 and 2 decimals
     isValid = false;
-    outputMsg = errorMsg || Constants.VALIDATION_EDITOR_INTEGER_MIN.replace(/{{minValue}}/gi, (matched) => mapValidation[matched]);
+    const defaultErrorMsg = operatorConditionalType === 'inclusive' ? Constants.VALIDATION_EDITOR_INTEGER_MIN_INCLUSIVE : Constants.VALIDATION_EDITOR_INTEGER_MIN;
+    outputMsg = errorMsg || defaultErrorMsg.replace(/{{minValue}}/gi, (matched) => mapValidation[matched]);
   } else if (maxValue !== undefined && intNumber !== null && ((operatorConditionalType === 'exclusive' && intNumber >= maxValue) || (operatorConditionalType === 'inclusive' && intNumber !== null && intNumber > maxValue))) {
     // MAX VALUE ONLY
     // when decimal value is bigger than 0, we only accept the decimal values as that value set
     // for example if we set decimalPlaces to 2, we will only accept numbers between 0 and 2 decimals
     isValid = false;
-    outputMsg = errorMsg || Constants.VALIDATION_EDITOR_INTEGER_MAX.replace(/{{maxValue}}/gi, (matched) => mapValidation[matched]);
+    const defaultErrorMsg = operatorConditionalType === 'inclusive' ? Constants.VALIDATION_EDITOR_INTEGER_MAX_INCLUSIVE : Constants.VALIDATION_EDITOR_INTEGER_MAX;
+    outputMsg = errorMsg || defaultErrorMsg.replace(/{{maxValue}}/gi, (matched) => mapValidation[matched]);
   }
 
   return { valid: isValid, msg: outputMsg };
diff --git a/src/app/modules/angular-slickgrid/editors/__tests__/dualInputEditor.spec.ts b/src/app/modules/angular-slickgrid/editors/__tests__/dualInputEditor.spec.ts
index c77aaa47c..9671bd9e1 100644
--- a/src/app/modules/angular-slickgrid/editors/__tests__/dualInputEditor.spec.ts
+++ b/src/app/modules/angular-slickgrid/editors/__tests__/dualInputEditor.spec.ts
@@ -650,6 +650,15 @@ describe('DualInputEditor', () => {
         editor = new DualInputEditor(editorArguments);
         const validation = editor.validate({ position: 'leftInput', inputValue: 10 });
 
+        expect(validation).toEqual({ valid: false, msg: 'Please enter a valid number that is greater than or equal to 10.2' });
+      });
+
+      it('should return False when field is lower than a minValue defined using exclusive operator', () => {
+        mockColumn.internalColumnEditor.params.leftInput.minValue = 10.2;
+        mockColumn.internalColumnEditor.params.leftInput.operatorConditionalType = 'exclusive';
+        editor = new DualInputEditor(editorArguments);
+        const validation = editor.validate({ position: 'leftInput', inputValue: 10 });
+
         expect(validation).toEqual({ valid: false, msg: 'Please enter a valid number that is greater than 10.2' });
       });
 
@@ -666,6 +675,15 @@ describe('DualInputEditor', () => {
         editor = new DualInputEditor(editorArguments);
         const validation = editor.validate({ position: 'leftInput', inputValue: 10.22 });
 
+        expect(validation).toEqual({ valid: false, msg: 'Please enter a valid number that is lower than or equal to 10.2' });
+      });
+
+      it('should return False when field is greater than a maxValue defined using exclusive operator', () => {
+        mockColumn.internalColumnEditor.params.leftInput.maxValue = 10.2;
+        mockColumn.internalColumnEditor.params.leftInput.operatorConditionalType = 'exclusive';
+        editor = new DualInputEditor(editorArguments);
+        const validation = editor.validate({ position: 'leftInput', inputValue: 10.22 });
+
         expect(validation).toEqual({ valid: false, msg: 'Please enter a valid number that is lower than 10.2' });
       });
 
diff --git a/src/app/modules/angular-slickgrid/editors/__tests__/floatEditor.spec.ts b/src/app/modules/angular-slickgrid/editors/__tests__/floatEditor.spec.ts
index 530c3a295..122bc44bb 100644
--- a/src/app/modules/angular-slickgrid/editors/__tests__/floatEditor.spec.ts
+++ b/src/app/modules/angular-slickgrid/editors/__tests__/floatEditor.spec.ts
@@ -461,6 +461,15 @@ describe('FloatEditor', () => {
         editor = new FloatEditor(editorArguments);
         const validation = editor.validate(10);
 
+        expect(validation).toEqual({ valid: false, msg: 'Please enter a valid number that is greater than or equal to 10.2' });
+      });
+
+      it('should return False when field is lower than a minValue defined using exclusive operator', () => {
+        mockColumn.internalColumnEditor.minValue = 10.2;
+        mockColumn.internalColumnEditor.operatorConditionalType = 'exclusive';
+        editor = new FloatEditor(editorArguments);
+        const validation = editor.validate(10);
+
         expect(validation).toEqual({ valid: false, msg: 'Please enter a valid number that is greater than 10.2' });
       });
 
@@ -469,6 +478,15 @@ describe('FloatEditor', () => {
         editor = new FloatEditor(editorArguments);
         const validation = editor.validate(10.22);
 
+        expect(validation).toEqual({ valid: false, msg: 'Please enter a valid number that is lower than or equal to 10.2' });
+      });
+
+      it('should return False when field is greater than a maxValue defined using exclusive operator', () => {
+        mockColumn.internalColumnEditor.maxValue = 10.2;
+        mockColumn.internalColumnEditor.operatorConditionalType = 'exclusive';
+        editor = new FloatEditor(editorArguments);
+        const validation = editor.validate(10.22);
+
         expect(validation).toEqual({ valid: false, msg: 'Please enter a valid number that is lower than 10.2' });
       });
 
diff --git a/src/app/modules/angular-slickgrid/editors/__tests__/integerEditor.spec.ts b/src/app/modules/angular-slickgrid/editors/__tests__/integerEditor.spec.ts
index e31f377fb..90cf7d4e7 100644
--- a/src/app/modules/angular-slickgrid/editors/__tests__/integerEditor.spec.ts
+++ b/src/app/modules/angular-slickgrid/editors/__tests__/integerEditor.spec.ts
@@ -425,6 +425,15 @@ describe('IntegerEditor', () => {
         editor = new IntegerEditor(editorArguments);
         const validation = editor.validate(3);
 
+        expect(validation).toEqual({ valid: false, msg: 'Please enter a valid integer number that is greater than or equal to 10' });
+      });
+
+      it('should return False when field is lower than a minValue defined using exclusive operator', () => {
+        mockColumn.internalColumnEditor.minValue = 10;
+        mockColumn.internalColumnEditor.operatorConditionalType = 'exclusive';
+        editor = new IntegerEditor(editorArguments);
+        const validation = editor.validate(3);
+
         expect(validation).toEqual({ valid: false, msg: 'Please enter a valid integer number that is greater than 10' });
       });
 
@@ -433,6 +442,15 @@ describe('IntegerEditor', () => {
         editor = new IntegerEditor(editorArguments);
         const validation = editor.validate(33);
 
+        expect(validation).toEqual({ valid: false, msg: 'Please enter a valid integer number that is lower than or equal to 10' });
+      });
+
+      it('should return False when field is greater than a maxValue defined using exclusive operator', () => {
+        mockColumn.internalColumnEditor.maxValue = 10;
+        mockColumn.internalColumnEditor.operatorConditionalType = 'exclusive';
+        editor = new IntegerEditor(editorArguments);
+        const validation = editor.validate(33);
+
         expect(validation).toEqual({ valid: false, msg: 'Please enter a valid integer number that is lower than 10' });
       });