This skimmer is made to be used on Doughboy, Lomart or Embassy pools with a top ledge 6 or smaller. Or walls that have the cut out for it. The lid, basket, weir, return, winter shut off return disk. Vacuum adapter, vacuum cover and all gaskets are included. Note: Butterfly gaskets will be sent not the single style shown unless you request them. Large opening allows more water flow to give more efficient skimming. Vacuum hook-up allows for easy, vacuuming. The u-joint skimmer gasket provides extra protection against leaks. Rounded skimmer faceplate and gasket create a. Tight seal to stop leaks. For pool wall protection. If the current skimmer on the pool has a clear/black lid it is a Deluxe not a standard skimmer. We have no control over the price.