<div ng-repeat='(nam, factory) in presentations' class="accordion_container">
                <ion-item class="item-stable" ng-click="toggleGroup(factory)" ng-class="{active: isGroupShown(factory)}">
                    <i class="icon" ng-class="isGroupShown(factory) ? 'ion-minus' : 'ion-plus'"></i> &nbsp; {{nam}}
                </ion-item>
                <div class="row responsive-md item-accordion gallery" ng-show="isGroupShown(factory)" ng-repeat="model in factory | buildingFilter: activeBuilding.getName()" ng-if="$index % 4 === 0">
                    <ion-item class="col cust_col" ng-if="$index < factory.length" href="#/tab/presentations/{{model.id}}" on-hold="showCompareMenu()">
                        <img ng-src="{{factory[$index].image}}" width="100%" height="100%" />
                        <div class="image_name" ng-if="factory[$index].name !== undefined">
                            {{factory[$index].name}}
                        </div>
                    </ion-item>
                    <ion-item class="col cust_col" ng-if="$index + 1 < factory.length" href="#/tab/presentations/{{factory[$index + 1].id}}" on-hold="showCompareMenu()">
                        <img ng-src="{{factory[$index + 1].image}}" width="100%" />
                        <div class="image_name" ng-if="factory[$index + 1].name !== undefined">
                            {{factory[$index].name}}
                        </div>
                    </ion-item>
                    <ion-item class="col cust_col" ng-if="$index + 2 < factory.length" href="#/tab/presentations/{{factory[$index + 2].id}}" on-hold="showCompareMenu()">
                        <img ng-src="{{factory[$index + 2].image}}" width="100%" />
                        <div class="image_name" ng-if="factory[$index + 2].name !== undefined">
                            {{factory[$index].name}}
                        </div>
                    </ion-item>
                    <ion-item class="col cust_col" ng-if="$index + 3 < factory.length" href="#/tab/presentations/{{factory[$index + 3].id}}" on-hold="showCompareMenu()">
                        <img ng-src="{{factory[$index + 3].image}}" width="100%" />
                        <div class="image_name" ng-if="factory[$index + 3].name !== undefined">
                            {{factory[$index].name}}
                        </div>
                    </ion-item>
                </div>
            </div>