I installed this shower head in my newly remodeled shower stall using a Hansgrohe 9Ã¢â‚¬Â arm for the wall mount. The 9Ã¢â‚¬Â arm seems to be about the right size for this head. The spray patterns and coverage are very good. The main setting can be very strong if you turn the shower all the way on. You can also adjust the intensity by moving the outer ring to the number 2 pattern which is a combination of the inner and outer jets. The massage position (inner jets only, number 3 pattern) is great for your neck. I think the gallon per minute rating was 2.5 but on the first setting it seems like a lot more is flowing if I turn up the pressure. I am very satisfied with this shower head and would recommend it to anyone looking for a good quality wall mount shower head.