I found this box spring easy to put together, however the wood pieces were very splintered in many places.  I actually received a few splinters because of this.  When you see heavy duty in the title you think it will be incredibly strong, but I felt like this was fairly flimsy once it was put together.  The slats that go on top are held in place by 4 small strips of Velcro.  I think these slats should have been done much better.  Overall I would not recommend this product.