Hi, is the 5" made to go on to 5" duct

I purchsaed the 4 inch for my clothes dryer exhaust vent to the outside of my house. They are true to size and a 5 inch should fit a 5 inch duct perfectly. This is an excellent addition to either a stove vent or clothes dryer vent. It prevents back draft air from entering the duct and also prevents conditioned air from escaping my house.

Hi - would it be best to put this at the end of the vent (near the outside) or on the house closest to the dryer? My vent is installed in the soffit.

Always at the end of the vent where the air exhaust to the outside of your house. You want to keep cold and hot air from being forced into your house on windy days as well as insect and birds from nesting. I have one on my kitchen stove vent on the outside brick wall and on my dryer vent on the side of my house. Before i installed it my laundry room was cold all winter from wibd being forced in.

For my cooktop vent, i have a broken plastic damper i need to replace. this one is 5.5in od, what product would work for this?

I,m using a reducer on the top of the vent hood over the cook top from 5 inch vent to 4 inch duct and then i am using the 4 inch pressure activated back draft your referring to on the outside wall with an ordinary clothes dryer rain shield over the opening. The dryer vent pipe cover should have a wind / rain shield incorporated in it. Most dryer vent covers have a plastic door which does not permit a positive closer in windy conditions. I also have the spring loaded damper door on my clothes dryer. These doors are great for preventing blow back into your house when either the cooktop vent or dryer are not in use.

Do u make a 7 inch inline damper?

Good Morning, the RK is available in 160mm or 200mm

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neverest® RK 4 Inch Backdraft Shutter 100mm Ducting Connector Galvanized

neverest® RK 4 Inch Backdraft Shutter 100mm Ducting Connector Galvanized

Product ID: 50008731

Details

Brand
neverest
Colour
Silver
Connector type
Pipe connector
Exterior finish
Aluminium
Item dimensions L x W x H
57 x 52 x 40
Item weight
140 Grams

🔇Rubber sealing ensures 100% quiet, airtight closure

⚙️Dual stainless steel springs for automatic, reliable flap action

🛠️Galvanized steel housing for ultimate durability

€ 39.34

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Description

🚀 Elevate your airflow game with neverest® — where precision meets peace of mind!

SILENT EFFICIENCY - Rubber sealing combined with precision springs guarantees zero noise and zero backflow—experience peace of mind and comfort.
TRUSTED EXPERTISE - Backed by 40+ years of ventilation mastery, delivering professional-grade performance that managers and homeowners rely on.
SEAMLESS INTEGRATION - Designed exclusively for metal ducts with a perfect 100mm fit, ensuring hassle-free installation and optimal airflow control.
VERSATILE APPLICATION - Ideal for whole-house ventilation, HVAC, heat recovery systems, and more—upgrade your indoor air quality effortlessly.
ROBUST INDUSTRIAL GRADE BUILD - Galvanized steel and aluminum blades engineered for longevity and resilience in demanding ventilation setups.

The neverest® RK 4 inch Backdraft Shutter is a premium ventilation accessory crafted from galvanized steel and aluminum, featuring dual stainless steel springs and a rubber seal for silent, airtight operation. Designed exclusively for 100mm metal ducts, it prevents unwanted air backflow while enabling smooth exhaust airflow. Perfect for HVAC, whole-house ventilation, and heat recovery systems, this durable shutter combines expert engineering with easy installation to enhance indoor air quality and comfort.

Specifications

ASIN	B011INHF5A
Best Sellers Rank	212,440 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,014 in Registers, Grilles & Vents
Brand	neverest
Colour	Silver
Connector Type	Pipe connector
Country of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (2,096)
Exterior Finish	Aluminium
Item Dimensions	57 x 52 x 40 centimetres
Item Highlight	Backdraft Shutter 100mm Ducting Connector Galvanized Steel with Rubber Sealing Fits Only with Metal Ducts
Item Weight	140 Grams
Manufacturer	neverest
Material	Alloy Steel, Rubber, Stainless Steel
Number of Packs	1
Number of Pieces	1
Part Number	40545030039031
Size	100mm
Thread Size	100
Thread Type	UN
Unit Count	1.0 count

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€ 39.34

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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