This pergola is a great addition to our backyard deck and provides the shade and privacy we needed.  I would advise most people to pay for installation even though it doubled the price of the purchase. It took two expert installers around 3-4 hours to assemble.  It is attractive but I am concerned about being away if there should be heavy winds. I asked Wayfair representative if the canopy can easily be removed and was told yes prior to purchasing. The installers informed me I would need to remove 4 screws, and use a ladder in order to remove the canopy when I go on vacation. That is my only negative comment so far.