Easy to assemble and does what it says it does.  Keep in mind it is not 6ft tall, so it is best used where it's meant to work with walls with the top angled away from your main living turf .  In other words, if you have the top aimed straight up at the ceiling and if you are constantly walking towards it, and you are 6 ft tall, you may not like the glare you see from the rim.  It's best used with the rotating top angled towards a wall.