WeCooper 100mm - 4 inch Connector with Backdraught Shutter, Non-Return Damper Flap to Connect Duct Pipe or Flexible Hose Pipe
Thumbnail 1Thumbnail 2Thumbnail 3Thumbnail 4Thumbnail 5Thumbnail 6Thumbnail 7Thumbnail 8

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
Secure Transaction

Details

  • Material
    short
  • Brand
    WeCooper
  • Exterior finish
    Stainless
  • Inlet connection size
    4 inches
  • Inlet connection type
    Female Iron
  • Outlet connection type
    Flare
📏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

D**T

Extractor grille anti back draft connector

Delivered on time. Works perfectly. I am pleased I chose it

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

.**.

Well made and effective 150mm backdraught shutter

This 150mm Backdraught Shutter seems to be well made and gives every impression it should last. The spring is nicely judged as the flap opens readily from the lowest flow setting on my cooker hood. The shutter provides a good seal to the elements and doesn't rattle in strong winds. My only caveat would be that the housing might have been better in stainless rather than galvanised steel, as the shutter passes appreciable quantities of condensation from cooking. Hence fours stars.

N**R

Quality

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

G**L

Needs a very high powered fan.

Seems to be of good quality but it doesn’t work with my vent Axya Svara fan. It needs a much more powerful fan.

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.

T**M

This item was….

Exactly what I needed. 👍

O**P

Very well made

The springs need some finagling if whatever device you have hasn't got enough puff. Very well made though.

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

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

2 months ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Shop Global, Save with Desertcart
Value for Money
Competitive prices on a vast range of products
Shop Globally
Serving millions of shoppers across more than 100 countries
Enhanced Protection
Trusted payment options loved by worldwide shoppers
Customer Assurance
Trusted payment options loved by worldwide shoppers.
Desertcart App
Shop on the go, anytime, anywhere.
HK$357

Duties & taxes incl.

Hong Kongstore
1
Free Shipping

with PRO Membership

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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