Gas Spring (Strut) Part Numbers.
I just went through and replaced 12 of the 17 gas springs on various compartment doors. The candidates for replacement were selected based only on the observation that a door would not reliably stay up. Motivation was supplied by a little breeze that caused a door to fall on my legs while working in the inverter/charger compartment.
The the most time-consuming part of the job was getting the correct part numbers. I'm sure lower prices can be had for some or all of these from other sources. But Amazon was the easiest, one-stop source available to me.
Dave & Cathy, 2002 Country Coach Affinity, 42', #6103, CAT C12, 2003 Cherokee Overland