Carvin Laser L192C 7C 19" Top Mount 1 1 2" Valve Sand Filter (94089192) midtexrelays The Pentair C1 217P diffuser is The Pentair C1 217P diffuser is designed for compatible Max E Glas and Dura Glas 1 2 HP pump applications where the diffuser needs replacement The no overlay format adds flexibility when the visible face needs to be selected separately so the finished repair can match the original layout more closely The Carvin Laser L192C 7C sand filter is designed for pool systems that need dependable top mount sand filtration in a compact 19 inch format A filter like this is useful because it provides a traditional sand based filtration approach that can handle routine debris removal while keeping operation straightforward