Farish MEA loads

[The Cuckoo]

I recently bought a rake of MEA's that came with plastic loads already inserted, as I intend to add more wagons of this type in the future, I wondered if anyone can please advise if these load inserts are available through Bachmann/Farish or are they produced independently by another company?

[MJKERR]

Remove the load and look at the underside, this may have the manufacturers details on it
I too am looking for suitable loads for the MEA wagon, so post photos of both sides and I will try to identify
I have seen ready made loads for the MEA wagon by Jacksons Models / Saxondale, these are typically white on the underside