We were 2 assembling this bed and it took us close to 6 hours with many 'What the heck!?' moments. Some steps are far from being self explanatory. I have a 9 inch thick mattress and I have to push the mattress from above the Murphy for it to close (The add says 10 inches) every time I use the bed, I would strongly recommend you : 1- Get professionals to install it as it's very easy to mess up a step or damage the murphy as the quality is at par with the price (not bad but definitely not a 5 000$ murphy bed and it shows) and 2- Use an 8 inch mattress if you want it to fit properly