HHXRISE 24 inch Stacking Kit for Washer and Dryer, Washer Dryer Stacking Kit, Small Space Saving Solution for Stackable Washing Machine and Dryer, Stacking Kit with Pull-Out Shelf and Ratchet Strap :
Design Discussion : Stacked Laundry Units - Room for Tuesday
Stacking Kits – How to organise your washer and dryer « Appliances Online Blog