It fits perfectly my older model KENMORE Coldspot 106.56563400 refrigerator (sold by Sears). After some research I figured out that Whirlpool makes these parts sold under different brand names, and that Whirlpool part 2188656 is the same size as the older Whirlpool part. Concerning several customers writing that they got a part without the humidity control and/or without the white plastic handle cover, they must have ordered through Amazon from non-Amazon vendors, or perhaps purchased this at a time that Amazon was providing them from another supplier, because the drawer I got was packaged in an original Whirlpool box, and it did come with the humidity control and the white plastic handle cover, as shown in the Amazon photograph.Concerning the design of these drawers I fully agree that it is very badly designed. It seems to be made of Polycarbonate (or a similar transparent thermoplastic). I looked at the old drawer slides and at the slides of the other drawers in the refigerator and all the slides all show incipient micro-cracks when looked at with magnification (which looks like a white discoloration to the naked eye). So I thought, what lubricant could I use that is bio-compatible and works well at low temperatures?Of course, Chap-Stick, is bio-compatible as it is meant to be used on human lips, is meant to be used at low temperatures, and is a great lubricant. So I put Chap-Stick through all the slides. This works great: the drawers now slide in and out of the refrigerator much better without the stick-slip that was present before and was responsible for the micro-cracking.