Mustee 63M 24" x 24" Mop Service Sink. The Model 63M is a one piece molded fiberglass Mop Service Basin made with matched metal molds created with extreme heat and pressure. With the dimension of 24" x 24" and a height of 10". The sinks drain is integrally molded and comes with a drain seal for installation to 3" ABS, PVC, (Sch. #80) and iron pipe. Also included with the 63M is a removable stainless steel strainer. Performance tested to meet or exceed ANSI Specifications Z 124.6.