Siemens Uni-PAK 6-Gang 400 Amp Ring Style Multi-Family Metering WP4611 - The Home Depot
GE Mini Mod® III TMMR4220RHB 2-Position 3-Wire Meter Socket With 0RHB6630 Horn Bypass, 120/240/208Y/120 VAC, 200/400 A, 1 ph Phase, NEMA 3R Enclosure | State Electric
siemens 400 amp 6 gang meter base 125a/gang 1 phase 120/240v SP4611 rain proof | eBay
Square D MP43200 400 Amp w/3 Gang / Position 200A Meter Socket OH/UG a – I5 Electric Supply