Rutland 211 Fireplace Dry Mix Patch Refractory mortar that is ideal for joining or repairing masonry flue tile in any gas or wood fireplace and wood, coal, or pellet stove chimney Can be used as a parge coating (thin over-coat) when building or repairing fireboxes Dry mix cement, just add water and trowel into place Dark grey finish For interior use, rated up to 2550F (1400C)