Allows Suction Hose to Be Connected to Skimmer: The suction plate is designed to fit into the skimmer basket in the pool and connect to the suction hose, creating a seal that allows the vacuum to suck water and debris out of the pool through the skimmer. Allows Skimmer to Operate Normally: When the plate suction is in place, the skimmer continues to operate normally, allowing water to flow through it and enter the pool's filtration system. Premium Quality: The plate pool skimmer's suction pump is typically made of durable PVC that can withstand the chemicals and environmental conditions found in swimming pools. Size: 15.5 x 12 cm / 6.1 x 4.7 inches. Note: Rubber gasket is not included! Improves Suction: By connecting the suction hose directly to the skimmer, the suction plate improves the efficiency of the suction process. This allows for faster and more thorough cleaning of the pool.