A:Answer Hi there, Demetri! Thank you for your questions about the WM8900HBA washer, DLEX6700B dryer, and Sidekick model WD200CB. We understand that setting up your laundry appliances correctly is crucial for efficiency and convenience. You can stack the DLEX6700B dryer on top of the WM6700HBA washer while using the Sidekick model WD200CB, which is designed to maximize space and functionality in your laundry area. To install all three components together, you will need a stacking kit specifically designed for LG appliances, sold separately, to secure the dryer on top of the washer. Additionally, ensure you have the appropriate water hoses for the washer and electrical connections for both the washer and dryer. If you hire Best Buy for the installation, they usually provide the necessary parts and supplies required for the setup, including the stacking kit. However, it’s always a good idea to confirm with them beforehand what will be included in their installation service to ensure you have everything you need. If you have any further questions or need assistance with the installation process, please feel free to reach out. Please send us a private message on Social Media @LGUSSupport, and our team will be more than happy to assist you further. We appreciate your inquiry and look forward to helping you set up your laundry appliances! —Avril
