Make cleaning more convenient with the 21 oz. Refill Bottle for Suncast Commercial Mopping System. This refill bottle provides allows you to simply replace the reservoir on your existing Suncast Commercial Mopping Systems when they run out and get back to work. As a direct replacement for Suncast reservoirs, this refill bottle eliminates the inconvenience of refilling the reservoir over and over. Purchase one bottle or several to drastically cut down on cleaning time in larger spaces. The 21 oz. Refill Bottle for Suncast Commercial Mopping System includes a single refill bottle to keep your bucket-less mopping system going for longer.