Deep cycle battery tray – anyone know what make this is?

I got a new to me overland truck and it's missing the battery hold downs. This is definitely not a stock tray and it's in a Toyota. Need to find clamps, anyone know what make this is?

https://preview.redd.it/2sja3ybks1i81.png?width=960&format=png&auto=webp&s=976b6194e0b9f22ecaafd74fe20c07ce8d943ea8