Delivered in some strong enough box. Is quite easy to mount. Does work as expected.Two minor notes though, not affecting the functionality at all:When using together with an ordinary 50mm sewer pipe as seen on the photo, there is a little gap between the valve and the floor due to the thickness of the pipe material.The capping when being closed sits on some edge only, rather than some area, thus resulting in a slight airflow noise eventually when using the vacuum on another plug, especially when the mounting is not too accurate.