VGB 6 Inch Bulkhead Adapter Fitting - 1-1/2 Inch Extended MPT - Sumpless filter-internal-diameter_1 1/2 inches and the nominal ozone output

and the nominal ozone output is

This kit does not include the applicator gun

Full diameter is 1-5/8 inches

If you are interested in obtaining a quote for a size not listed

VGB 6 Inch Bulkhead Adapter Fitting - 1-1/2 Inch Extended MPT - Sumpless filter-internal-diameter_1 1/2 inches and the nominal ozone outputThis is a VGB 6 inch Bulkhead Adapter Fitting, 1 1 2 inch extended MPT, for the 6 inch Hockey Puck suction outlet cover (item 6HP101). There are additional adapter configurations available. They are: 615T101 (1 1 2 inch MPT), 615SI101 (1 1 2 inch slip), 620SI101 (2 inch slip), RND101 (2 inch socket), and 620T15S101 (2 inch MPT and 1 1 2 inch slip).