This drain plug is for use with the following pool pump series and models: EcoStar SP3400VSP, TriStar VS SP3200VSP, TriStar SP3200EE and SP3200X, and NorthStar SP4000 and SP4000X. With the pool as the centerpiece of the rapidly growing Outdoor Living market, Hayward is prioritizing innovation, efficiency, and comfort. We’ve built industry-leading equipment, filters, and pumps for over 100 years, and today, we are at the forefront of innovation for pool and outdoor living technology and internet-connected homes.