Firebacks are designed to protect the back fireplace wall and to radiate more heat into the room. Pennsylvania Firebacks are made of the highest quality cast-iron and can be leaned against the firewall. Another option is to use the popular Saf-T-Boot (item #61096 small, or 61097 large) to integrate a Pennsylvania Fireback with a fireplace grate. The fireback, Saf-T-Boot, and grate make a beautifully practical, interior hearth hardware set. We The People, the Preamble to our Constitution in high relief is 18" wide X 21" high.