Universal Stacking Kit
2992100300
https://www.blombergappliances.com/universal-stacking-kit.html
Maximize the space in your laundry room with Blomberg’s Universal Stacking Kit. Included with a dryer purchase, it prevents your Blomberg washer and dryer units from moving or sliding. Able to stack units of different sizes, it provides flexibility even if there’s only a two-foot nook available.