Related Clues:

• Part of an HVAC system
• ___ tape (DIYer's roll)
• Passage for milk
• Mammary passageway
• Heating tube
• Tear __
• Passage for air or tears
• Enclosed channel
• HVAC tube
• Air-conditioning passage
• What might bring the heat
• Heating pipe
• It could carry air or a tear
• Passageway for a tear