Mine is 440mm from seat to tip, 419mm from end of plastic to tip, 35mm from tip to H, 22mm from tip to L.
Mine has the Nissan logo but with 21000 stamped on it as well.
The tube length is 310mm (+ - 5mm) from the block to the end of the tube.
I think the tubes may be of diffeent size for the different blocks, models, series, maybe ?????