The shipping charges - for Long Bars/Material - calculated at time of checkout will vary due to weight and box size.
NOTE: Most product dimensions are approximate within manufacturing tolerances and in many cases are a close approximation after converting from metric.
The 34-M works with the 4C trolley (and any trolley with a 12mm bolt) to allow you to screw the trolley into the top of the gate frame rather than drilling through the frame.