Floor box

[LLSolutions]

Did floor outlets in a home. I used whatever standard box the supply house had- wiremold brand I believe. Anyways Customer wants something "more" flush than that. Anybody use anything that sits even with the floor? I'm thinking something round where I can use a hole saw to recess the plate a little without playing carpenter for half the day. It's a finished hardwood floor with access below from the crawl space. Thanks in advance

 

[GoldDigger]

They are really expensive, but the standard flush solution is the floor box with built-in height adjustment and the thick brass faceplate with hinged of threaded openings to access the receptacles.
I do not know whether the sill receptacles cited in other recent threads are suitable for floor instsllation.