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RMDD480448", Stainless Steel, Downdraft , Internal Blower, 500 CFM

  • Overview
  • Links
  • Make-Up Air Specifier
  • Specifications
  • Accessories
  • Reviews
  • Answers
  • Designed specifically to be compatible with most conventional and commercial style cooktops, combines a sensational appearance with high performance features. Stainless steel construction on all exposed surfaces provides a durable finish and an unforgettable look. (Insufficient space for built-in ovens)

    • Compact design is installed directly behind the cooktop for an unobtrusive appearance. (Not for use behind ovens.) Thin profile saves precious space under the cabinet
    • Chimney rises over 9-1/2 inches when activated, ideal for large pots and pans
    • Infinitely adjustable control is designed to provide convenient access to govern the blower speed for effective and quiet operation
    • Optional remote control will activate down draft from an alternate location (RMDDRBK sold separately)
    • Dishwasher-safe filters are easy to remove and feature a stylish brushed stainless steel appearance for a professional look
    • Unique ducting capability allows the internal blower connection to be ducted to the left, right or downward (from left to right)
    • Heat Sentry adjusts speed of blower to high automatically in case of excess heat, to prolong product life
    • Compatible with optional Broan Make-up Air Dampers (MD6TU or MD8TU, sold separately) to fit 6" or 8" ducting and help to balance the air pressure when the range hood is in use, keeping your environment comfortable
  • Article Links

    The Kitchen as a Pollution Hazard

    Fixing Stove Hoods To Keep Pollution Out Of The Kitchen

  • Range Hood Make-Up Air Specifier

    Code compliant make-up air solutions for domestic range hoods in family dwelling units


    To help you determine your make-up air needs, Broan-NuTone has developed this on-line tool.  With our Make-Up Air Specifier you can be confident that the products you choose will meet the latest codes and regulations and satisfy the home’s needs.  Use this tool to make your specification job easier.


    Let’s get started by selecting the state where the dwelling unit will be located. CLICK HERE

  • Accessories OptionalYes
    Accommodates Ceiling HeightN/A
    Blower Air Mover TypeCentrifugal Blower
    Blower IncludedYes
    Boost ModeNo
    CFM (Airflow)500
    Color/FinishStainless Steel
    Control Feature Filter ReminderNo
    Damper IncludedNo
    Delay Shut OffNo
    Digital ClockNo
    Dishwasher Safe FiltersYes
    Duct Connector Size3-1/4" x 10"
    ENERGY STAR® certified productNo
    Filter IncludedYes
    Filter TypeStainless Steel
    Flue Accommodates ceilings up to xx ftN/A
    Heat Sentry - Temperature SensorYes
    HVI CertifiedYes
    Light Bulb Quantity0
    Light Bulbs IncludedNo
    Lighting FunctionN/A
    Max Sones/100 CFM1.8
    Minimum Height Above Cook TopN/A
    Mounting TypeUnder Counter
    Nightlight SettingNo
    Non-Stick CoatedNo
    Product Depth (inches)7"
    Product Height (inches)29-1/2"
    Product Width (inches)48"
    Rated Amps4.0
    Rated Voltage120
    Remote ControlOptional
    Sones Certified Horizontal Rectangular HighN/A
    Sones Certified Horizontal Rectangular LowN/A
    Sones Certified Vertical Rectangular HighN/A
    Sones Certified Vertical Rectangular LowN/A
    Sones Certified Vertical Round HighN/A
    Sones Certified Vertical Round LowN/A
    Switch Control SettingsVariable
    Switch StyleRotary Dial
    UL ListedYes
  • RMDD4804 is rated 4.3 out of 5 by 10.
    Rated 5 out of 5 by from Great unit Unit is very efficient and attractive. Works as advertised
    Date published: 2017-12-28
    Rated 4 out of 5 by from Works well, Installation not the easiest, could have better manual Works well but still dealing with some housing vibration noise. Unless you measure everything in the store, you will not realize how big this unit is and how much room it takes in the cabinet until you take it out of the box. It will work best with an extra deep or open back/open side cabinet. From the installation manual, I just was not sure I had the cutout right until I actually put the blower in place. (By the way - it is heavy.) Even after reading the install manual on electrical placement, I still ended up moving the plug in box.. Unless your gas line is already in place for the cooktop, wait to run it until you have the blower installed.
    Date published: 2016-04-12
    Rated 4 out of 5 by from OVerall Good value Works extremely well and consistently except one of the 6 burners does not function well. It sort of explodes heat. But the other five work perfectly.
    Date published: 2015-02-06
    Rated 5 out of 5 by from Excellent product. Love the easy operation and attractive look. The downdraft functions excellent taking smoke and fumes out of my kitchen. The attractive style looks fabulous on my center island. Operates great and not too noisy even with fan on high. I love this product and would recommend it.
    Date published: 2015-02-06
    Rated 5 out of 5 by from Good product and good styling Great value compared to upper end name brand downdrafts. Quality and noise are good.
    Date published: 2014-03-12
    Rated 4 out of 5 by from good vent wish it was a little taller, when using gas stovetop front burner it will not catch all the smoke as it is not quite tall enough and our very sensitive smoke alarm will go off...if you don't have cathedral ceilings & use the back burner it'd be perfect!
    Date published: 2014-03-10
    Rated 4 out of 5 by from Exhausts effectively, but noisy. Installation was not easy. The vent is noisier than I expected, especially at high speed exhaust. Fortunately the fan speed and noise can be adjusted. Insatallation was challenging. I was very difficult to attach the ductwork because there was so little space beloww and behind the unit. Also, the dimensions given do NOT include the 1/2" bolts sticking out of the back of the unit. The cabinet had to be cut away partly in back to allow for the extra space.
    Date published: 2013-10-16
    Rated 3 out of 5 by from Not included the remote button For the price you pay they should include the remote button with the unit. $1600.00 dollars later I had to call and order the 62.00 remote button. My mother is 4' 5" and no way could she lean over the stove to turn on the unit. This is a no brainer if you are spending that amount of money include the little remote button. It was a hassle and held up our construction and counter tops for a week waiting on this part.
    Date published: 2013-08-28
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  • Vent will not go up or down

    The vent will not go up or down but I can hear the motor running. Worked fine for a couple of weeks. Help.
    Asked by: Ditmo
    There is a plug in the housing for the motor to raise and lower the unit separate from the fan motor. open the housing under the cabinet and make sure it is plugged in into the internal socket. (plug and play)
    Answered by: SteveW38
    Date published: 2017-12-28

    Could this product be installed upside down so it comes down from a ceiling instead of up from a counter when turned on?

    I'm looking for a product that can be installed in the flat ceiling above an oven so when I open the oven door, any smoke coming out of the oven can be captured and vented out instead of rising to the top of the vaulted ceiling. Having a product like this that extends down when turned on and retracts into the ceiling when off would help with the visual appeal.
    Asked by: Mark
    Thank you for your questions on the Broan RMDD4804. No you cannot mount the Broan RMDD4804 upside down. This unit must be mounted per the instructions. If you have any questions please contact Technical Support directly at 800-637-1453. We do offer island mounted Range Hoods that can be mounted over your cooking equipment or we offer kitchen rated exhaust fans that can be mounted into the ceiling.
    Answered by: BroanCustomerService
    Date published: 2018-01-12

    External venting

    In my home routing ductwork outside of the house will be very difficult. Is the product suitable for internal venting?
    Asked by: DRA
    Thank you for your question on the model RMDD4804 down draft kitchen exhaust system. The RMDD4804 does not offer a non-ducting option. It must be installed with duct work going completely outside.
    Answered by: BroanCustomerService
    Date published: 2016-02-22

    Is there a 48" downdraft that is recirculating and not ducted?

    Asked by: Sami
    Thank you for your question on our down draft units. We do not offer a non-ducted down draft in the Broan line. We do however, offer this in the BEST line of our range hoods. The D49M or Cattura can be seen on the BEST website at www.bestrangehoods.com. If you have any questions about this model, please contact our Technical Support directly at 800-637-1453.
    Answered by: BroanCustomerService
    Date published: 2016-07-20

    Does the RMDD 4804 have to be ventd outside or is there a recirculating kit available. The island where cooktop is located has a finished room below

    Asked by: Willi
    Thank you for your question on the RMDD4804 down draft unit. Yes, this down draft would need to be ducted to the outside. There is no recirculation kit available for this model.
    Answered by: BroanCustomerService
    Date published: 2018-01-18
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