Alternative racks?

For examples of racks I'm looking at (all with the wheels removed):

• https://sysracks.com/product/42u-24-depth-it-telecom-cabinet-srf-42-6-6/
• https://www.server-rack-online.com/3105-3-024-42.html
• https://tripplite.eaton.com/42u-smartrack-shallow-depth-rack-enclosure-cabinet-doors-side-panels~SR42UBSD (without back cover)
• https://navepoint.com/navepoint-42u-server-rack-cabinet-800mm-depth-cable-management-top-glass-door-commercial-series/
• https://www.lowellmfg.com/product/ler-4027-enclosed-rack-40x27/
• https://www.snapav.com/shop/en/snapav/floor-standing/sr-av-cab-42u-25in

All are under 30" deep and would have the front rails pushed back as far as possible to still let the 17" deep LL-S be mounted, while leaving as much space in the front for the ground bars and cabling.

I have a 6-bay rack and I'm impressed with the build quality, bus bars and equipment ground connections, etc. I'm glad I bought the thing to house my six LL-S, but I'm not familiar with other alternatives except for cheaper open racks without a bus.

FWIW, the EG4 rack itself is not UL listed. Someone else just posted on this forum last week that they failed an inspection because the rack has no identifying UL markings. That had me worried I might have a similar problem, but my grid connected backup system with an 18Kpv passed final inspection last week without a hitch.

Good point on the UL ratings, I believe CA has crazy requirements if the total BESS (enclosure + batteries) is not UL9540 certified, and in this case the EG4 LL-S is just UL9540A tested - not certified as a complete system. I will likely get rejected by the AHJ as well.