Rev-A-Shelf has kept design and flexibility in mind with this heavy-duty appliance lift system. The lifting mechanism makes lifting a heavy or awkward appliance a breeze with its spring loaded supports and 3 different weight settings. The 1-1/2" thick wooden shelf is included and ready to install. Finally this unit features (2) built in dampeners that allow this unit to gently glide back inside of your cabinet with very little assistance needed.