The EG4-280Ah-AW-Conduit-Box-Quick-Start-Guide.pdf shows a cross brace for mounting a 12/18kPV inverter. I have a Flexboss21 and it has different dimensions. is there any updated document showing the combination I have?
we don't have any documents for this, but you can look at this video. He has the FlexBoss with the conduit box. Also, the product page mentions that they were made to be compatible with the Flexboss21.