10Hx10Wx15L is the tray area.  the box is a bit smaller.  

When will we see more of these? I love the one I have and need more. 

What are your dimensions now 🤔 kinda hard to help if we don't know 

I've been looking to get into a new lifepo4 for my RV.  i have a single lead acid group 27 in there now.  There's not much room elsewhere to change the battery compartment.    ...