Prevail® with ComforTrack technology features a cushioned threshold, making it easier to get in and out of the bath or shower. ComforTrack allows you to kneel, sit or lean on the threshold, making it easy to bathe a child or clean the bathing/showering space. Sterling® Sliding Shower Door, Series: 572075, Prevail®, 54-5/8 to 59-5/8 in Opening Width, 66-13/16 in Opening Height, Framed, Tempered Glass, 3/16 in Glass Thickness, 70-1/8 in Overall Height, 59 3/8 in Overall Width, 25-11/16 to 28-3/16 in Walk Through, Anodized Aluminum, Silver with Frosted Glass Texture