General description This 1.5 inch threaded drain plug is designed to prevent pipe damage from expanding frozen water. It features an anti-freeze cap with an O-ring, providing a secure, leak-proof seal to effectively winterize both above-ground and in-ground pools during the winter months. This accessory is ideal for maintaining the integrity of the pool in freezing weather. Technical specifications Size: 1.5 inch Material: Plastic Compatibility and accessories This replacement cover fits a variety of pool filter models, including: D.E Above Ground Pool and Spa Filter Clean & Clear Cartridge Filter Clean & Clear Plus Pool and Spa Filter FNS Plus and PLM Modular cartridge filter model 2 and 3 PLD modular media pools 2 and 3 D.E filter models 3 models of pool and spa sand filters Other information Note: Data is all measured manually. Due to differences in light and display, please allow 1-3cm error. Please refer to the actual item received.