We purchased 2 of these. I felt bad for the delivery guy because it took 2 of us to bring the box into the house.  They are heavy and sturdy.   love the trundle for when my girls have friends over.  We have a high pile rug in the room, so it doesnt roll to well, but we knew that when we purchased.  No big deal.  It took about 2 hours, with 2 people, to put one bed together.