A put a new bed in my RV, which gas spring should I use?

We unfortunately cannot make specific application recommendations due to liability and engineering restrictions. However, the most common springs used in that application are 80#, 100# and 120#.  You can find a link to those three springs below.

https://industrialhardwaredirect.com/product/lgp8-200-80/

https://industrialhardwaredirect.com/product/lgp8-200-100/

https://industrialhardwaredirect.com/product/lgp8-200-120/