caliduct
caliduct · caliducts
A pipe or duct used, especially in ancient times, to convey hot air or steam for…A pipe or duct used, especially in ancient times, to convey hot air or steam for heating purposes.
A pipe or duct used, especially in ancient times, to convey hot air or steam for…A pipe or duct used, especially in ancient times, to convey hot air or steam for heating purposes.