5-3/4″ whole wheat flour Concelebration Altar Bread. Our Communion Breads, made by Cavanagh Company, are produced in the United States in an exceptionally clean and automated facility, baked of only wheat flour and water with no additives. The breads are sealed within minutes after baking and are untouched by human hands. Sold in boxes of 25. This large concelebration bread has impressed lines for easy breaking into 24 pieces.