I bought this for a king size bed so it came in 2 sections. I found it pretty easy to put together and I’m almost 70! The hardest part was joining them as the 2 pieces were strange looking pieces like a jig saw. But did it and decided to add plastic pull ties too. My mattress is very heavy foam. But this adjustable has been the BEST!  I’ve had for 4 months so far so good.