Box or tray to house 4 8d size LiFePO4 batteries neatly together?

I recently completed my first overlanding solar array on my truck, but I am already thinking of expanding it from a 2 battery system to a 4 battery system. I have searched EVERYWHERE I can think of for a box, case or even just a tray to house 4 LiTime 230ah batteries. The two batteries I already have are housed in the NOCO dual battery box. There was plenty of room to both house the batteries and do all the wiring (bus bars, disconnect switches, two shunts and every 12 volt connector you could dream up and more). It is a very nice battery box, but the size limits me to two batteries. So, does anyone have a lead on where to find something that would neatly house a 4 battery (8D size) box, tray or anything else that may be considered for battery organization. Thanks in advance for any help!