FireRock Systems Rumford Model FireRock offers a simple way to build a high-end, all-masonry fireplace and chimney. This smartly designed system installs in a matter of hours for less than half the cost of a traditional brick and mortar fireplace. Not only does it look great, it lasts forever. About the Rumford Model: Taller opening allows for a larger fire and greater heat reflection Great for homes with high ceilings Accommodates FireRock masonry or approved metal chimney system