The fire box is also hexagonal with square holes in the front and rear, and the hood is a long steep slope like a dome roof with nine sections on which an orb is mounted' and are said to have been popular with tea ceremony masters.
火袋も六角で前後に四角の穴を穿ち、笠は急勾配の長めで九段の葺地を表し、頂上に宝珠が乗る独特の形をして」おり、茶人たちに好まれたという。