Product review (2 stars): Could be better
It is too short. The height fits perfectly well on my vents, but the width hardly covers it. Besides, the magnet is not too strong, so I had to put 8 strong thick magnets to keep it in place. After doing this, it really makes a difference with the cooling efficiency, but the total cost is much higher and I had to paint everything with the color of my walls, otherwise it looks very ugly.