It’s a combination of [Maximum length + stroke] (unit mm).
What is maximum length? Assuming that there are hole-type end fittings at both ends when the gas spring is extended to the maximum, it is the length of the gap between the two-hole centers.
4Tube & Rod Bracket Code No.
Two uppercase letters of English Alphabet representa brackets code.
If a product does not have a bracket, there is no code attached to this part.