My 50″ 4K LED TV that weighs 28 pounds fits perfectly and doesnt sag. Materials are cheap but dont appear that way. It says right on the instructions to not put more than 40 lbs on the top shelf, no wonder so many people have problems with the shelf sagging.
https://www.amazon.com/Furinno-11058BK-GY-Turn-S-Tube-Entertainment/dp/B00EDTE2Q2