This one!
The plug goes down into the box/receptacle. IMO, a cleaner look, especially if low to the floor furniture is over it.
That looks like one I roughed in on a remodel. Had an aggravation. I told GC I was leaving the papers, nailed to the wall & that the flooring had to be cut just right for the parts to fit. He just glanced it over & cut it his way. Lots of chiseling to to because of that. If I do that again, I will insist on a piece of flooring so I can cut it in properly. Then the other flooring will have to start from my piece. It is hard to get other trades to understand the need for a good cut/proper fit.
That is why I have always cut it in myself :happyyes:That looks like one I roughed in on a remodel. Had an aggravation. I told GC I was leaving the papers, nailed to the wall & that the flooring had to be cut just right for the parts to fit. He just glanced it over & cut it his way. Lots of chiseling to to because of that. If I do that again, I will insist on a piece of flooring so I can cut it in properly. Then the other flooring will have to start from my piece. It is hard to get other trades to understand the need for a good cut/proper fit.
I don't know about using them on new construction but for old work they are great.
There is a template to use for the cut-out. It's not cut square like you would think just looking at the box. It is rounded at the corners. I'm guessing that's so the round cover will cover it well. If you cut it with square corners, there is more of a chance the top brass cover wouldn't hide the corner cuts.
Another plus with this box is it is adjustable for different floors/coverings.
I would prefer to use one that only required a hole saw to cut out the opening. But the only ones I have found that you can use a hole saw on only are single receptacle. Most want a duplex receptacle, so I use the one pictured.