Does this damper fit completely inside the duct or is it a coupler for attach duct on both ends ?

I would say that it’s a coupler for ducting. I placed mine inside the wall and attached ducting either end.

Is it better to place this right before the fan or right after?

I don’t know if it will make any difference. I have positioned mine after the fan, only because of space restrictions.

hello can this be fitted to a kitchen extractor fan ?

In my opinion it wouldn't fit a window extractor. However, if 100mm trunking is used on the fan exit I would think it will fit the internal trunking.

We have an in-line fan with 100mm flexible ducts on both sides. Where is the best place to put this flap?

Without actually seeing the placement and type of ducting, place the flap as close as practical to the fan unit exit. I actually fitted mine to the exit side body of the fan.

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WeCooper 150mm - 6 inch Connector with Backdraught Shutter, Non-Return Damper Flap to Connect Duct Pipe or Flexible Hose Pipe

WeCooper 150mm - 6 inch Connector with Backdraught Shutter, Non-Return Damper Flap to Connect Duct Pipe or Flexible Hose Pipe

Product ID: 472829555

Details

Brand
WeCooper
EU Spare Part Availability Duration
2 Years
Exterior finish
Galvanized
Inlet connection size
5.9 Inches
Inlet connection type
Solvent
Material
Galvanized

📏150mm (6 inch) precision fit

🔄Automatic one-way airflow control

🛡️Galvanized steel & stainless steel durability

E£ 4022

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate your ventilation with precision and power — don’t let your airflow settle for less!

PREMIUM DURABILITY - Constructed with galvanized steel casing, aluminum blades, and stainless steel shaft for long-lasting performance.
SEAMLESS 150 MM FIT - Perfectly engineered for standard duct and flexible hose connections, ensuring hassle-free installation.
NOISE REDUCING SEAL - Inner rubber and outer foam seals minimize noise and guarantee airtight operation.
SMART AIRFLOW CONTROL - Automatic backdraught shutter prevents cold air ingress while allowing smooth exhaust flow.
VERSATILE APPLICATION - Ideal for tumble dryers, bathrooms, garages, air conditioners, cooker hoods, and ventilation systems—upgrade your airflow game.

The WeCooper 150mm (6 inch) Connector with Backdraught Shutter is a high-quality swing check valve designed for duct and flexible hose connections. Featuring a galvanized steel casing, aluminum blades, and stainless steel shaft, it ensures durability and reliable one-way airflow control. Its noise-reducing rubber and foam seals provide airtight operation, making it perfect for use in tumble dryers, bathrooms, garages, air conditioners, and ventilation systems. Engineered for easy installation and optimal performance, this valve prevents cold air backflow while maintaining smooth exhaust.

Specifications

ASIN	B09H5DR1R9
Best Sellers Rank	16,647 in DIY & Tools ( See Top 100 in DIY & Tools ) 122 in Ducting
Brand	WeCooper
Connector Type	Flanged
Country of Origin	China
Customer Reviews	4.2 4.2 out of 5 stars (1,095)
EU Spare Part Availability Duration	2 Years
Exterior Finish	Galvanized
Inlet Connection Size	5.9 Inches
Inlet Connection Type	Solvent
Manufacturer	WeCooper
Material	Galvanized Steel Sheet, Aluminium, Stainless Steel
Model Number	700721629992
Number of Packs	1
Number of Ports	1
Outlet Connection Size	5.9 Inches
Outlet Connection Type	G Connector
Set Name	Single
Size	6 inch
Specification Met	EN 1074, EN 1092
Thread Type	NPT
UPC	700721629992
Unit Count	1.0 count
Valve Type	Swing Check Valve

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TrustScore 4.5 | 7,300+ reviews

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