Faber MUDAMPER8 Specification Sheet

6”
10”

Bring fresh air back into the home and improve hood performance 

MUDAMPER6
MUDAMPER10

p.o. box 435  •  Wayland, MA 01778 • tel: (508) 358-5353  •  fax: (508) 358-5730 • e-mail: info@faberonline.com • www.faberonline.com

400 - 600 cfm 
over 600 up to 1200 cfm

With higher cfm range hoods more air is exhausted from today’s tighter home with less 

“passive” air returning into the home through the walls. To “make up” for lost air and to prevent toxic 

air from coming in from garages etc., the Make up Air kit by Faber brings fresh outside air into the home 

through a separate fresh air duct with a sealed damper. This automatic motorized damper opens to bring in 

air when the hood is operating above 400 cfm and closes tightly when the hood is not in operation.  

Kit includes the following (ABOVE): 6 or 10” switch assembly 

(left), 6 or 10” automatic return air damper (right) and 

24 Volt plug in transformer (bottom)

• Meets IRC (International Residential Code) M1503.4
• 24 Vac, 60 Hz Ac Motor on Damper
• Fresh Air Damper Opens Automatically When Range Hood Fan Is Operating
• Fresh Air Damper Closes Shut Automatically When Range Hood Fan Is Turned Off
• Switch Assembly Attaches Directly Above The Hood Inside Ducting
• Can Be Installed in All Ducting Configurations (Vertical, Horizontal, Down or After Elbows) 
• Switch Assembly Fits Inside All Faber Chimneys, Compatible With All Models Over 300 CFM 
• Simple Installation: No Drilling, Calibrations Or Measuring Required
• Designed and Engineered to stand up to heavy cooking contaminants (grease, steam, smoke and steam)
• Can Be Combined With Most Other Hvac Components and is a Universal Makeup Air Solution 
• Reliable Mechanical Air Switch Prevents Service Issues and False Tripping of System
  

Air switch at the hood duct 

exit, activated by air flow, 

 opens the damper 

outside to let in fresh air

Air switch lowers when 

hood is off & tightly closes 

the outside damper