Foam for rusty lee bed

Does anybody know the dimensions of the 2 slabs of foam I'll need for a rusty bed?
I gather I need 4" thick medium density, www.efoam.co.uk being a good place for it, but forgot to get actual dimensions.
Muchos gracias gringos

I know the width, it's the depths I'm after!

 

Not being very helpful size-wise BUT ..
I`ve just renewed the foam in my R&R bed and bit the bullet, buying some 4" stuff from Bluebird customs - 2" of normal and 2" memory foam .
Expensive but ABSOLUTELY BRILLIANT !!
The most comfortable nights sleep ever - end of ....
Think it was about £140 for the 3/4 size but money well spent.

 

They're 17½” x 57” x 4"

 

Did you get the foam sorted?

 

not yet, i been so busy havnt even got round to ordering the bed! how much could you do me the foam for, delivered?
Pm if you want, cheers

 

We do a package deal on the Rusty Lee Bed, foam and trimming if you're interested?

 

Would love to but can't afford the whole package at the moment. Just looking to get it done cheap as possible and put a temp cover on the foam to get me going!