Very time consuming and difficult to assemble (~ 3 hours).  Instructions were reasonably clear, but there were a large number of parts and pieces that had to be correctly oriented and bolted together.  The final clevis pins that connect the seat deck and back deck together were not long enough (~1/4 too short) and required wood clamps, hammer, and pliers to get the pieces close enough to access the clevis pin hole in the bolt and put the pin through. The manufacturer is obviously trying to save some factory and shipping cost by passing assembly onto the consumer.  While that is understandable, and we appreciated the reasonable price on the futon, the level of effort was quite over the top.