Purchased our greenhouse in July and it was delivered in August.  We unboxed and waterproofed everything prior to construction, or so we thought.  We didn’t open one box because we thought it just had the fan.  Surprise.  When we discovered we were missing some pieces, we opened the last box and found everything we were missing.  Everything was labeled plainly.  We were pleased that the pilot holes almost always lined up.  The book instructions were clear and easy to follow.  The BILT App did not account for the change in the roof construction.  Removing the blue protective plastic on the metal pieces was the most annoying.  We felt like we made good progress until the blue plastic removal.  The actual construction took us (two old ladies) about 22 hours and the initial waterproofing took another 15 hours.  We were very pleased with the quality of the materials, the clarity of the assembly instructions and the look of the finished product.  Now if we can just grow something.