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DGD Series Plastic Designer Exhaust Grille w/ Metal Backdraft Damper/Collar Combination for 6" Duct
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Product Highlights
Description
Specs
| Product Type: | Exhaust Grille |
|---|---|
| Duct Size: | 6" |
| Material: | Plastic |
| Type: | Round |
| Warranty: | 5 Year |
Questions?
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Product Reviews
I would buy this product again. Easy to order online.
If I need it wood by again
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Great service.
good experience
just installed exhaust fan. Works well.
Product Q&A
2 QuestionsQ: Is this damper automatically open when the fan runs or when it feels presure...Once the fan is off, and the damper automatically close?
Asked by Joe 13 years ago
Add your answer
The damper does open and close automatically with the force of air traveling through the duct. I am not overly impressed with the flaps in these dampers, they are thin aluminum butterfly hinged on a thin metal retention pin. I'd recommend being very careful with them when handling and installing, and also make sure that there is plenty if room for them to open when installing I have seen better damper designs, but these do function fine if installed correctly. -Chad
It has a spring mechanism built into the hinge that urges the damper closed when the air is not flowing, and the force of the air is enough to overcome the spring and push it open when the air is flowing. When the grille is mounted for vertical upward air flow (e.g., mounted in a ceiling), gravity assists the spring in closing the damper when the air is off, and the damper mechanism works best in this mounting configuration. The spring may have trouble pushing the damper all the way closed in other installation configurations, such as installation in a wall.
Yes, the damper only opens when the fan runs. The continuous air pressure keeps the damper open. When the fan stops, the pressure of the air also stops. causing the damper to close based on gravity, thus keeping heated air inside the house from escaping outside. -Jack Downing
Q: Is the backdraft damper reversible?
Asked by gwbossio 15 years ago
Add your answer
Verified Reply- PexSupply StaffAccording to the manufacturer it is not. The backdraft damper only works one way.
if you can remove the grill part and put on the back end, you might be able to accomplish that