Refractory article

A refractory article, comprising:

• a support structure comprising:
• a first plurality of posts coupled by a first member, wherein each of the first plurality of posts comprises a through aperture, wherein the through apertures of the first plurality of posts are coaxially aligned, and wherein the first member is a monolithic piece that extends through each of the through apertures of the first plurality of posts;
• and
• a second plurality of posts substantially parallel with the first plurality of posts, wherein the second plurality of posts are coupled by a second member, each of the second plurality of posts comprises a through aperture and the through apertures of the second plurality of posts are coaxially aligned, wherein the second member is a monolithic piece that extends through each of the through apertures of the second plurality of posts;
• and
• a plurality of support members extending between the first and second plurality of posts, wherein the plurality of support members create a plurality of support levels in the support structure,
• wherein each one of the first and second plurality of posts comprises a plurality of protrusions that extend from a surface of each respective post, and each support member is supported by a protrusion extending from one of the first plurality of posts and a protrusion extending from one of the second plurality of posts,
• wherein:
• the support structure has a height to width ratio of at least 1.5;
• the support structure has a solid to open volume ratio of no greater than 5%;
• and
• at least one of the first and second members is not secured to the through apertures of the first or second plurality of posts and is configured to move freely in a longitudinal direction.