Rev-A-Motion Single 50 Qt Trash Can. Rev-A-Motion 4WCMB Series Waste Units are the only bottom mount units available with the Rev-a-Motion 8" Soft Open, Soft Close Slide System. Innovative gas spring assisted shock allows unit to open smoothly and close softly even under the heaviest use. New design allows installation into 1-1/2", 1-5/8", and 1-3/4" face frame sizes as well as frameless cabinets.Minimum Door Opening: 11-3/8". *Colored Lids Available-Sold Separately*