KR Specialties shower water stopper is a collapsible threshold water dam that helps prevent falls, and reduce facility liability and maintenance. The Collapsible Water Dams (U.S patent (#7,055,188)) by KR Specialties Inc. is designed specifically for all types of barrier-free, curbless showers and is the ideal shower dam for water control. This shower water stopper collapses easily by foot or wheelchair and this shower dam features a strong self-adhesive and water resistant tape bottom that eliminates messy applied adhesives. This collapsible dam can be used on handicap and accessible shower thresholds, and is the perfect for roll-in showers. The end caps for showers with radius or square end walls are only available with the KR Specialties brand collapsible water dam (U.S patent (#7,055,188)). The end caps, coupled with the Collapsible Shower Dams neutral color, provide a finished look for barrier-free living at its best!