This was an excellent purchase.  It is heavy-duty and made a huge difference in my mattress.  I can adjust the head a little or a lot.  The only drawback is that it functions like an old-fashioned chaise lounge in that you must move it all the way forward before it will release to go back down.  I don't adjust the bed much/often so that is really not an issue.  The little bit of elevation helps with various health issues and snoring.  Thanks for offering an adjustable bed at an affordable price.