Originally Posted by Cbrandt79
We have a 3120rl as well. Ours is a 21. I ordered a 39x90 and it works well. Had to order from 2 different merchants though. The first one came in damaged so I refused it. Packaging from factory is not well enough for the size and weight. Needed to put in risers so the slide would clear the doors. I just used 2x2 wood to elevate glide. Great upgrade for us
My 39x90 MORryde cargo tray finally arrived today, luckily, in good condition. Now I am just waiting for our new Montana to be repaired (bedroom slide was not working properly) so we can take delivery.
Curious if you used wood or metal screws when you installed your cargo tray and do you know if there is any plumbing or wiring underneath the basement floor that I need to steer clear of?