diff --git a/projects/angular-gridster2/src/lib/gridsterItem.ts b/projects/angular-gridster2/src/lib/gridsterItem.ts
index 94611400..be80279f 100644
--- a/projects/angular-gridster2/src/lib/gridsterItem.ts
+++ b/projects/angular-gridster2/src/lib/gridsterItem.ts
@@ -20,6 +20,7 @@ import {
 import { Gridster } from './gridster';
 import { GridsterDraggable } from './gridsterDraggable';
 import type { GridsterItemConfig, ResizableHandles } from './gridsterItemConfig';
+import { getItemHeightMargin, getItemWidthMargin } from './gridsterMargin';
 import { GridsterResizable } from './gridsterResizable';
 import { GridsterUtils } from './gridsterUtils';
 
@@ -130,8 +131,8 @@ export class GridsterItem implements OnInit, OnDestroy {
     const $item = this.$item();
     const top = $item.y * this.gridster.curRowHeight;
     const left = $item.x * this.gridster.curColWidth;
-    const width = $item.cols * this.gridster.curColWidth - $options.margin;
-    const height = $item.rows * this.gridster.curRowHeight - $options.margin;
+    const width = $item.cols * this.gridster.curColWidth - getItemWidthMargin($options);
+    const height = $item.rows * this.gridster.curRowHeight - getItemHeightMargin($options);
 
     this.top = top;
     this.left = left;
diff --git a/projects/angular-gridster2/src/lib/gridsterMargin.ts b/projects/angular-gridster2/src/lib/gridsterMargin.ts
new file mode 100644
index 00000000..0c2fec7b
--- /dev/null
+++ b/projects/angular-gridster2/src/lib/gridsterMargin.ts
@@ -0,0 +1,19 @@
+import { GridType, type GridsterConfigStrict } from './gridsterConfig';
+
+type GridsterMarginOptions = Pick<GridsterConfigStrict, 'gridType' | 'ignoreMarginInRow' | 'margin'>;
+
+export function getItemWidthMargin($options: GridsterMarginOptions): number {
+  if ($options.ignoreMarginInRow && ($options.gridType === GridType.Fixed || $options.gridType === GridType.HorizontalFixed)) {
+    return 0;
+  }
+
+  return $options.margin;
+}
+
+export function getItemHeightMargin($options: GridsterMarginOptions): number {
+  if ($options.ignoreMarginInRow && ($options.gridType === GridType.Fixed || $options.gridType === GridType.VerticalFixed)) {
+    return 0;
+  }
+
+  return $options.margin;
+}
diff --git a/projects/angular-gridster2/src/lib/gridsterRenderer.ts b/projects/angular-gridster2/src/lib/gridsterRenderer.ts
index bfcd246d..dc38b0e6 100644
--- a/projects/angular-gridster2/src/lib/gridsterRenderer.ts
+++ b/projects/angular-gridster2/src/lib/gridsterRenderer.ts
@@ -3,6 +3,7 @@ import { Renderer2 } from '@angular/core';
 import { Gridster } from './gridster';
 import { DirTypes, GridType } from './gridsterConfig';
 import { GridsterItemConfig } from './gridsterItemConfig';
+import { getItemHeightMargin, getItemWidthMargin } from './gridsterMargin';
 import { CommonGridStyle, GridColumnCachedStyle, GridRowCachedStyle } from './gridsterRendererTypes';
 
 export class GridsterRenderer {
@@ -40,8 +41,8 @@ export class GridsterRenderer {
     } else {
       const x = Math.round(this.gridster.curColWidth * item.x);
       const y = Math.round(this.gridster.curRowHeight * item.y);
-      const width = this.gridster.curColWidth * item.cols - $options.margin;
-      const height = this.gridster.curRowHeight * item.rows - $options.margin;
+      const width = this.gridster.curColWidth * item.cols - getItemWidthMargin($options);
+      const height = this.gridster.curRowHeight * item.rows - getItemHeightMargin($options);
       // set the cell style
       this.setCellPosition(renderer, el, x, y);
       renderer.setStyle(el, 'width', width + 'px');
@@ -127,12 +128,14 @@ export class GridsterRenderer {
   }
 
   getGridColumnStyle(i: number): CommonGridStyle {
-    const margin = this.gridster.$options().margin;
+    const $options = this.gridster.$options();
+    const widthMargin = getItemWidthMargin($options);
+    const heightMargin = getItemHeightMargin($options);
     // generates the new style
     const newPos: GridColumnCachedStyle = {
       left: this.gridster.curColWidth * i,
-      width: this.gridster.curColWidth - margin,
-      height: this.gridster.gridRows.length * this.gridster.curRowHeight - margin,
+      width: this.gridster.curColWidth - widthMargin,
+      height: this.gridster.gridRows.length * this.gridster.curRowHeight - heightMargin,
       style: {}
     };
     newPos.style = {
@@ -153,12 +156,14 @@ export class GridsterRenderer {
   }
 
   getGridRowStyle(i: number): CommonGridStyle {
-    const margin = this.gridster.$options().margin;
+    const $options = this.gridster.$options();
+    const widthMargin = getItemWidthMargin($options);
+    const heightMargin = getItemHeightMargin($options);
     // generates the new style
     const newPos: GridRowCachedStyle = {
       top: this.gridster.curRowHeight * i,
-      width: this.gridster.gridColumns.length * this.gridster.curColWidth + margin,
-      height: this.gridster.curRowHeight - margin,
+      width: this.gridster.gridColumns.length * this.gridster.curColWidth + widthMargin,
+      height: this.gridster.curRowHeight - heightMargin,
       style: {}
     };
     newPos.style = {
diff --git a/projects/angular-gridster2/src/lib/tests/gridsterRenderer.spec.ts b/projects/angular-gridster2/src/lib/tests/gridsterRenderer.spec.ts
new file mode 100644
index 00000000..8e172367
--- /dev/null
+++ b/projects/angular-gridster2/src/lib/tests/gridsterRenderer.spec.ts
@@ -0,0 +1,98 @@
+import { Renderer2 } from '@angular/core';
+
+import { Gridster } from '../gridster';
+import { DirTypes, GridType } from '../gridsterConfig';
+import { GridsterItem } from '../gridsterItem';
+import { GridsterItemConfig } from '../gridsterItemConfig';
+import { GridsterRenderer } from '../gridsterRenderer';
+
+describe('GridsterRenderer', () => {
+  const item: GridsterItemConfig = { cols: 13, rows: 6, y: 0, x: 0 };
+
+  function makeGridster() {
+    const options = {
+      gridType: GridType.VerticalFixed,
+      margin: 20,
+      outerMargin: true,
+      outerMarginTop: null,
+      outerMarginRight: null,
+      outerMarginBottom: null,
+      outerMarginLeft: null,
+      fixedColWidth: 20,
+      fixedRowHeight: 20,
+      keepFixedHeightInMobile: true,
+      keepFixedWidthInMobile: false,
+      ignoreMarginInRow: true,
+      useTransformPositioning: false,
+      dirType: DirTypes.LTR
+    };
+
+    return {
+      $options: () => options,
+      options: () => ({}),
+      mobile: false,
+      curColWidth: 50,
+      curRowHeight: 20,
+      curWidth: 1000,
+      rows: 20,
+      columns: 20,
+      gridRows: new Array(20),
+      gridColumns: new Array(20)
+    } as unknown as Gridster;
+  }
+
+  it('does not subtract row margin from item height when ignoreMarginInRow is true', () => {
+    const gridster = makeGridster();
+    const renderer = new GridsterRenderer(gridster);
+    const styles: Record<string, string | null> = {};
+    const angularRenderer = {
+      setStyle: (_el: Element, style: string, value: string | null) => {
+        styles[style] = value;
+      }
+    } as Renderer2;
+
+    renderer.updateItem(document.createElement('div'), item, angularRenderer);
+
+    expect(styles.height).toBe('120px');
+    expect(styles.width).toBe('630px');
+  });
+
+  it('uses the same row margin calculation for display grid rows', () => {
+    const gridster = makeGridster();
+    const renderer = new GridsterRenderer(gridster);
+
+    expect(renderer.getGridRowStyle(0).height).toBe('20px');
+    expect(renderer.getGridColumnStyle(0).height).toBe('400px');
+  });
+});
+
+describe('GridsterItem', () => {
+  it('keeps cached item height in sync with renderer sizing when ignoreMarginInRow is true', () => {
+    const gridster = {
+      options: () => ({}),
+      $options: () => ({
+        gridType: GridType.VerticalFixed,
+        margin: 20,
+        ignoreMarginInRow: true,
+        scrollToNewItems: false
+      }),
+      curColWidth: 50,
+      curRowHeight: 20
+    } as unknown as Gridster;
+
+    const itemComponent = {
+      gridster,
+      $item: () => ({ cols: 13, rows: 6, y: 0, x: 0 }),
+      item: () => ({}),
+      init: true,
+      width: 0,
+      height: 0,
+      itemResize: { emit: () => undefined }
+    } as unknown as GridsterItem;
+
+    GridsterItem.prototype.updateItemSize.call(itemComponent);
+
+    expect(itemComponent.height).toBe(120);
+    expect(itemComponent.width).toBe(630);
+  });
+});