Need bed for Taz 4 expansion project

I have Taz 4 that I am planning to double the Y axis on. I am looking for a supplier for the borosilicate bed. Does anyone know where a 600mm x 300mm sheet can be found? Thanks, Greg.

We’ve used Allen Scientific Glass in the past. Anytime you’d like to know more about our products and vendors check out the Bill of Materials on that specific or similar part.

Thanks, Their quote for a 6mm thick 300mm x 600mm piece of borosilicate is $205.50 plus shipping.