Search Results:
Search Results:
1 Choose Quantity
2 People Also Bought
500,000+ Orders Delivered FAST!
100-Day Money Back Guarantee
Over 7,236+ 5-Star Google Reviews
The Sigrist NRD-200 is a 200mm metal non-return damper for ducted ventilation and HVAC airflow systems. It fits standard 200mm round ducting and allows air to move in one direction only, closing against backdraft once the fan stops. A soft close buffer built into the NRD-200 slows the closing action and cuts the slamming noise common to plain gravity dampers.
Exhaust and inline fans on a 200mm run push air one way while running, but leave an open path back through the duct the moment they switch off. That open path lets cold outside air, odours, and insects track back into the room. A non-return damper sits in the run and closes against reverse flow, so the duct only carries air in the intended direction and holds that one-way airflow on the whole 200mm line.
Installers fit the NRD-200 inline on a 200mm duct to finish an exhaust or ventilation run without call-backs over draughts or duct noise. The metal body holds shape on longer commercial runs where light plastic flaps can warp or rattle. The soft close buffer keeps the damper quiet, which matters on bathroom and bedroom exhausts that run late at night.
The NRD-200 is sized for 200mm ducting and does not fit other duct diameters without a separate reducer or adaptor. It is a passive backdraft damper, not a powered fan, so it relies on a connected fan for airflow and does not form an airtight or fire-rated seal.
(NRD-200)
The Sigrist NRD-200 is used to stop reverse airflow and backdraft in larger ventilation and ducted exhaust systems.
It allows air to move one way only and helps stop outside air returning through the duct when the fan is off.
It can help reduce unwanted airflow, odours and drafts travelling back through the ventilation system.
Yes. The built-in buffer helps reduce slamming sounds when airflow stops.
Yes. It’s commonly installed in inline ventilation and exhaust fan duct runs.
Yes. Sparky Direct stocks the Sigrist NRD-200 with fast dispatch across Australia.
100-Day Fuss-Free Returns
We want you to love what you buy—but if you change your mind, that’s okay too. That’s why Sparky Direct offers a 100-day money-back guarantee.
If your item isn’t in its original condition, please contact us before returning it—we might save you time and money.
All products come with a manufacturer’s or supplier’s warranty
Damaged or Faulty Goods
If your order arrives damaged or is faulty, let us know within 24 hours.
Contact us via our chat to arrange the return.
Exclusions
We can’t accept returns for:
How to Request a Return
Warranty starts from Invoice Date
Domestic Use: 2 Year
Commercial Use: 2 Year
Warranty Method: Return to Sparky Direct
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | Sigrist Design |
| SKU | NRD-200 |
| Model # | NRD-200 |
| Package Weight | 1.530kg |
| TYPE | VALUE |
|---|---|
| Type | Duct Valve |
| Brand | Sigrist |
| Material | Metal |
| Diameter (mm) | 200 |
Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.
Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.
Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.
Nothing in this clause limits or excludes any rights or guarantees available under the Australian Consumer Law.
For website terms and conditions https://www.sparkydirect.com.au/terms-of-use
Help other Sparky Direct users shop smarter by writing reviews for products you have purchased.
$219.94 $199.95 ex. GST
$38.79 $35.26 ex. GST
$269.50 $245.00 ex. GST
$30.75 $27.95 ex. GST
$42.67 $38.79 ex. GST
$413.01 $375.46 ex. GST
$328.90 $299.00 ex. GST
$306.21 $278.37 ex. GST
