The RS800 RainStop seal is specifically designed to prevent the entry of rain into the loading dock area. The entry of rain into the facility causes product damage and slippery and unsafe conditions. The Pentalift RainStop utilizes a stiffly sprung five and a half inch foam filled header curtain to create a positive seal on the top of the trailer. The RainStop diverts the water from the top of the trailer and away from entering your building. The RainStop seal can be ordered separately for existing applications or in conjunction with a new dock seal.