I originally bought this frame for a custom job with a large stack height. After getting the frame and installing all my components, this frame turned out to be even better than expected. There was definitely a 30mm stack gap and more than enough space in front of and behind the stack to add more components. There were no assembly instructions on the frame, but a serious look at the picture of the finished assembly is enough to understand what goes where. The frame is quite light and has 6mm lever. all in all i would buy this frame again if i did another custom build or even a light build. This frame is suitable for 28mm cameras or adapted 19mm cameras with adapters.