I have posted a few times and have never been really given an answer as to why 45 Degree Later Duct Tees were not default parts in Building Systems 2004. To make matters worse is that, when I was looking through the Schematic Symbols library, many later tees appear. Why are there lateral tee details in this menu but NO lateral tees in the Duct menu? Please explain this to me. Is there any plan to add these tees to future upgrades? There is not a job that goes by that we don't use lateral tees. I inquired about it and was told that a lateral tee could be built for me but it would cost $150. Please somebody explain this to me!!!!