The type of material used for kitchen exhaust ducts are made of _________.
a) fiberglass
b) cement asbestos
c) galvanized steel
d) heavy gauge black steel
e) copper
Answer: D
The type of material used for kitchen exhaust ducts are made of _________.
a) fiberglass
b) cement asbestos
c) galvanized steel
d) heavy gauge black steel
e) copper
Answer: D