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Boston Appliance Winner of Best of Northshore EDITORS' CHOICE AWARD

Boston Appliance Showroom ®

60 Cummings Park, Woburn, MA 01801

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8" Make Up Air Kits


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The Faber MUDAMPER8 8-in. make-up air damper brings fresh air back into the home and improves hood performance. With higher cfm hoods more air is exhausted in tighter homes with less air coming back in. To "make up" for lost air, the universal make up air kit brings fresh outside air into the home through a separate fresh air duct. The automatic damper opens inside the duct to bring in air when the hood is operating above 400 cfm and closes tightly when the hood is off. The kit includes 8-In. switch assembly, 8-In. automatic return air damper, and 24-Volt plug in transformer. The air switch assembly attaches on top of the hood in the duct work and via low voltage wire "talks" to the make-up air damper. The air switch at the hood duct exit, activated by air flow, opens the damper outside to let in fresh air. The air switch then lowers when hood is off & tightly closes the outside damper. It opens when the hood is on, and closes when the hood is off.


  • Faber MUDAMPER8 8-in. universal make-up air damper
  • Attaches on top of the hood in the ductwork and via low voltage wire "talks" to the make-up air damper
  • 24 Vac, 60 hz ac motor on damper
  • Fresh air damper opens automatically when hood is operating, closes shut when 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 withstand 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
  • Meets IRC (international residential code) M1503.4
  • Recommended CFM: over 600 up to 1200 CFM
General Information
Product Model MUDAMPER8
Product Name Make-Up Air Damper
Product Type Range Hood Damper
Physical Characteristics
Color Galvanized
Application/Usage Vent Hood
Item Details
Part Number MUDAMPER8
Category Hoods/Ventilation
UPS Shippable Y
Shipping Weight 10
UPC Code 8015139911359
Product Dimensions English AIR FLOW SWITCH ASSEMBLY (Located inside Range Hood Ducting): 6 In. (h) x 8 In. (diameter)
AUTOMATIC MAKEUP AIR DAMPER (Located inside Fresh Air Ducting): 8 In. (h) x 8 In. (diameter)

Extended warranties are usually very inexpensive and can save you thousands in the future. Some can even cover extra costs that result, such as cost of food that spoils when your fridge dies. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Appliances can be large, heavy, and expensive and you probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new appliances should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you. Please consult a sales associate about delivery options.

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