Hello! I have a new 21BHE on order. Are there any current owners that could possibly measure the storage under the bunks and provide me the dimensions?
Do you still need this? I'd be happy to help you out.
Edit:
I was headed out to the rig, so I took a tape measure. It is 75" long, 22" wide, and 22.5" high. The opening (which faces the bathroom door) is about 18" wide and 22.5" high. The 75" length includes the 18" opening.