4x8x1/4" cement board

[jrsavoie]

We used to be able to buy 4x8 cement board / backer board / when I was a kid we used to get 4x8x1/4" asbestos board.

I can find 4x8x1/4" cement board online but haven't found any in stock anywhere.
All I can find is 5'x3'.

I can get it next day at Lowe's if I order 700 sheets.

I found 4x8x1/2 at ABC Supply.
I'd rather not wrestle that.

I could get by with 6'x3'.

I'd just as soon have a single piece.

Needs to be fire resistant.

I'm wondering if there's something similar but called by a different name.

90 miles south of Chicago

Any suggestions?

 

[PCustoms]

What are you doing?

 

[Skooterj]

For tile backer, Menards sell a bunch of 3x5 x1/4" cement board/DenShield/Ultrabacker. A few more seams than 4x8, but much easier to work with. They have a couple that come in 4x4 at 1/4", but I haven't seen 4x8 anywhere. You can get 1/4" underlayment plywood.