Q: What if my question isn’t listed here?
A: General FAQs
Q: How do I set a shut-off timer on my range hood?
A: To set the shut-off timer on your range hood:
- Turn the fan on and set to the desired speed.
- Press the leftmost button (o).
- Press the up and down buttons until the desired shut-off time is displayed (in minutes).
- The fan will shut off automatically when the timer ends.
Q: What is my unit’s CFM?
A: The maximum CFM of the Cosmo COS-18U48 under-cabinet range hood is 806.
Q: How do I convert my unit to ductless?
A: The COS-18U48 cannot be converted to ductless/recirculating.
Q: What is the required duct size for the Cosmo under-cabinet range hood?
A: The required duct size is 10” in diameter. The unit also includes a backdraft damper to prevent air from flowing in from the outside.