Light weight kiln shelves

[Komal]

Hi,

 

Am looking for a light weight option for kiln shelves—that may be kiln washed or used with fiber paper. My regular shelves are killing my back(have a slipped disc).  I have an octagonal and a square kiln, shelf sizes needed 18 x 28, and 23×23.  Anyone have suggestions of materials/where to buy from/prices?

Komal–amaalgam.com