diff --git a/components/lib/galleria/Galleria.d.ts b/components/lib/galleria/Galleria.d.ts
index 9fd2b8031..3eea3dde0 100755
--- a/components/lib/galleria/Galleria.d.ts
+++ b/components/lib/galleria/Galleria.d.ts
@@ -155,6 +155,10 @@ export interface GalleriaPassThroughOptions {
      * @see {@link BaseComponent.ComponentHooks}
      */
     hooks?: ComponentHooks;
+    /**
+     * Used to control Vue Transition API.
+     */
+    transition?: any;
 }
 
 /**
diff --git a/components/lib/galleria/Galleria.vue b/components/lib/galleria/Galleria.vue
index 320bb541a..348163442 100755
--- a/components/lib/galleria/Galleria.vue
+++ b/components/lib/galleria/Galleria.vue
@@ -1,7 +1,7 @@
 <template>
     <Portal v-if="fullScreen">
         <div v-if="containerVisible" :ref="maskRef" :class="[cx('mask'), maskClass]" :role="fullScreen ? 'dialog' : 'region'" :aria-modal="fullScreen ? 'true' : undefined" v-bind="ptm('mask')">
-            <transition name="p-galleria" @before-enter="onBeforeEnter" @enter="onEnter" @before-leave="onBeforeLeave" @after-leave="onAfterLeave" appear>
+            <transition name="p-galleria" @before-enter="onBeforeEnter" @enter="onEnter" @before-leave="onBeforeLeave" @after-leave="onAfterLeave" appear v-bind="ptm('transition')">
                 <GalleriaContent v-if="visible" :ref="containerRef" v-focustrap @mask-hide="maskHide" :templates="$slots" @activeitem-change="onActiveItemChange" :pt="pt" :unstyled="unstyled" v-bind="$props" />
             </transition>
         </div>