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Broan MD8T 8" Automatic Make-Up Damper

Item #: bci1328897
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Product Details for the Broan MD8T

8" Automatic Make-Up Air Damper

Some products are just built better. You can see it in features that work intuitively, smartly, and prove the design team considered function hand in hand with form. In the Broan Evolution Series it’s easy to see this attention to detail.

  • Easy to Install
  • Optimizes Tightly Built, Energy Efficient Homes
  • Synchronized to Only Open During Fan or Range Hood Operation
  • Does Not Let Unwanted Air Into the Home
Our SKU: Broan MD8T

This product is listed under the following manufacturer number(s):

*Denotes a finish or option that has been discontinued

Broan MD8T Reviews

Rated 5 out of 5 by from A great solution Mass Building Code requires makeup air on Hoods greater than 400 cfm...I used the Broan damper with a pressure switch (you can purchase this combo) to operate the damper and it works fantastic. You simply place the pressure probe in your hood exhaust vent, the switch which is normally open, closes and completes the circuit to operate the damper. I will be using this on all my houses.
Date published: 2013-03-29
  • 2016-07-26T06:53CST
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4 Questions from the Community
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What is the noise rating on the motor for this damper

The Broan MD8T does not have a sone or noise rating.

Will this work with any range hood?

Yes, this will work with any 8" round ducting.

Will this work with the Broan model 336 1500 cfm exhust fan and how is it controlled?

The Broan 336 requires a 10 inch duct and the Broan MD8T is for 8 inch ducts. This will only work if you get a duct increaser to your external exhaust fan. This unit is made to bring fresh air into your house. This only allows air to move in when your fan is operate.

If this will work with any range hood, what are the options for having it open automatically when the fan is activated?

The Broan MD8T is wired directly to your range hood and the damper will open when the hood blower is turned on.

Broan MD8T Technical Specs

Configuration Damper
Country Of Origin USA
Duct Size 8" Round
Function Make-Up Air
Length 10
Voltage 24
Width 11

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