WeCooper 100mm - 4 inch Connector with Backdraught Shutter, Non-Return Damper Flap to Connect Duct Pipe or Flexible Hose Pipe
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WeCooper 100mm - 4 inch Connector with Backdraught Shutter, Non-Return Damper Flap to Connect Duct Pipe or Flexible Hose Pipe

4.2/5
Product ID: 457438119
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Details

  • Material
    short
  • Brand
    WeCooper
  • Exterior finish
    Stainless
  • Inlet connection size
    4 inches
  • Inlet connection type
    Female Iron
  • Outlet connection type
    Flange
📏100mm (4 inch) precision fit
🔇Rubber seal for noise reduction
🛡️Galvanized steel & aluminum durability

Description

🚀 Elevate your airflow game with WeCooper’s sleek, silent, and secure duct connector!

  • UNIVERSAL COMPATIBILITY - Fits 100mm round pipes and 102mm flexible hoses—ideal for dryers, bathrooms, HVAC, and hydroponics.
  • WHISPER QUIET OPERATION - Inner rubber seal and foam strip minimize noise and vibration for a peaceful environment.
  • PREMIUM BUILD FOR LONGEVITY - Galvanized steel casing with aluminum blades and stainless steel shaft resists corrosion and wear.
  • EASY INSTALLATION SECURE FIT - Foam sealing strip plus clamp-ready design guarantees a tight, hassle-free connection every time.
  • SEAMLESS ONE WAY AIRFLOW CONTROL - Backdraught shutter ensures efficient, one-directional ventilation, blocking cold air intrusion.

The WeCooper 100mm (4 inch) Connector with Backdraught Shutter is a high-quality, corrosion-resistant inline damper designed for one-way airflow control. Featuring galvanized steel casing, aluminum blades, and stainless steel components, it fits both rigid and flexible ducts, reducing noise with rubber seals and foam strips. Perfect for enhancing ventilation efficiency in dryers, bathrooms, HVAC systems, and hydroponics setups.

Specifications

ManufacturerWeCooper
Package Dimensions28.5 x 21.8 x 6.2 cm; 150 g
Item model number208672c9-b911-4d76-a6cc-85e645db2f22
Size100mm 4 inch
ColourSilver
Materialshort
Batteries Required?No
Item Weight150 g

Have a Question? See What Others Asked

Does this damper fit completely inside the duct or is it a coupler for attach duct on both ends ?
Is it better to place this right before the fan or right after?
hello can this be fitted to a kitchen extractor fan ?
We have an in-line fan with 100mm flexible ducts on both sides. Where is the best place to put this flap?

Reviews

4.2

All from verified purchases

N**R

Quality

Very good quality, made to last. Works extremely well.

J**.

Easy to fit

Slotted neatly between fan & hose; rubber gasket ensures a decent seal when flaps are closed. Springs were a little too strong for vertical use (mounted on ceiling fan) but was easy to twist the arms round so that the flaps were simply held down mostly by gravity; utility room is far warmer now, and fan still works when it needs to.

E**E

Decent Product

Where i live can be quite windy at times, and my bathrooms where cold with the draught coming through. This product worked, about 70% better. Simple install, well made, decent price. I had to add spongey tape to get a snug fit. Would recommend 👍

F**L

Perfect for Cooker Hood

Really well made, I used on a Neff cooker hood and the flaps opened with ease even on the the lowest setting,some reviews suggest that the spring is too strong, seems perfect for a cooker hood especially if placed as close to the fan as possible, I doubt a tumble drying for example would have enough power

A**R

Seems to work well, but slightly loose.

Easy to install and seems to work well, however I had to add a strip of insulation tape (the type for doors and windows) around the unit so that it fits snuggly into the duct.

J**R

So good that I've ordered 2 more

Bought to replace the plastic flap draught damper. It made too much noise in the wind.This item is well made and strong. Doesn't open fully with air pressure so I pushed one of the two springs back and out so only one is in use... The flaps still close but now they open with ease when the fan is on. Works really well and doesn't need to be mounted with a TOP position so you can't fit it wrong..Great buy! I'll be getting another for my kitchen extractor

T**E

Not fit for purpose

I got a different brand product from a hardware store a year back and it was properly calibrated for extractor fans, had a very sensitive spring that would open if you oriented the device the wrong way. THIS product however was thrown together with a random spring that has not been callibrated for the purpose.A leafblower would struggle to get the flaps to move.

L**N

Just what I needed

great product

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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€ 49.35

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Wecooper 100mm 4 Inch Connector With Backdraught Shutter Non Return | Desertcart GERMANY