Includes insert stem with disposable plate and four-gang service head with housing, base, scrub water gasket, and barrier. Service head and insert install together to make a poke-thru assembly. Combine with faceplates (sold separately) to complete service head assembly. Shown assembled. Service head is shipped unassembled with the insert stem. NOTE: Assembled with scrub water gasket. For use on tile or carpet floors. Requires a minimum 3 1/16 (78mm) diameter hole.