Eye catching square shape with "X" grid design and pyramid top. Fits up to an 18"x18" flue. Features: Type: Square Pot. Series: Knight. Finish: Freedom Gray. Fireplace Compatibility:. Clay Tile / Masonry. Pre-Engineered. B-Vent. Approved for use with these fireplace systems:. Fire Rock. FMI/Desa. Heatilator. Heat n Glo. Isokern. Kingsman. Kozy Heat. Lennox. Majestic. Mason-Lite. Mendota. Monessen. Napoleon. Quadra-Fire. Regency. Rumford. Selkirk. Simpson Duravent. Sonoran. Town and Country. Travis Industries. Vermont Castings. UL-approved for standard masonry fireplaces. Specifications: Inside Diameter: 19". Overall Dimensions: 21" (W) x 21" (D) x 44" (H).European Chimney Pot