Took 2 hours for my husband to put together himself.  Directions self explanatory.  Came with extra nuts and bolts which isn’t common!   Drawers are spacious and no they aren’t on tracks but they move just fine on regular height carpet.  Bed is sturdy and frame reinforced with wood and metal.  I did a lot of research and glad I picked this frame ! It looks good.  And we have a 12 inch mattress' that fits just fine on it ! King size bed.   Only complaint I have is that there is extra space around the mattress on the frame that aren’t covered by the mattress. Not sure if that’s all king mattresses on the king size or just my specific mattress