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klimapartner RKI 4" Professional Backdraft Damper Inline Spring Loaded

klimapartner RKI 4" Professional Backdraft Damper Inline Spring Loaded

Q: How much pressure does it take to open? No rating is given (in comparison, the expensive Aldes brand gives 0.04 to 0.08 in. w.g.)

Thank you for your question. Ive uploaded a graph, in metric, which hopefully you can use if your aware of your ventilators specs. It can be found under the product pictures. Otherwise you need 10 pascals to open the vent in a 4 inch duct. The spring is relatively strong on our RKI series the RK series has a weaker spring. Because the RKI has a stronger spring we suggest it be installed after the ventilator with the flaps opening away from the ventilator. Hope this helps klimapartner

Q: In a *horizontal* duct installation, is there an optimal orientation for the spring/blades? (e.g., orient spring horizontally or vertically)? Thanks.

Thank you for your questoin. If you install the damper parallel, horizontal, to the ground it doesnt matter which way the sping/blades are. If you intsall the backdraft shutter vertically you want the blades/springs perpendicular to the ground. For further questions please dont hesitate to ask. sincerely, klimapartner

Q: My vent lines are already merged below the roof, to a 90° 4" vent roof pipe cover. Will your cover work for me? My old flapper broke.

Thank you for your question. Yes our backdraft shutter will work for you as long as you have a strong enough ventilator to push it open from that distance. The springs are stronger on the RKI then our RK model. If you install, which we recomend, the shutter right behind your ventilator you will not have any problems. The joy of the RKI series is that you can order it, install it without much hassle and if it doesnt work send it back. The RK 4 inch series https://www.amazon.com/dp/B011INHF5A has a weaker spring. This would also work and you need to connect it between two ducts. sincerely team klimapartner

Q: Go a kitchen exhaust should this be installed close to the fan or closer to the exterior wall.

If your goal is keeping the cold or hot air out of the house, it should be installed near the exterior wall of house. It will attract less grease build up the further away from hood and it will be easier to service or clean if you can access it from the outside rather than opening up interior walls.

Product ID: 296778978

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Details

Material
Galvanized
Brand
neverest
Item dimensions L x W x H
10.5 x 10.5 x
Exterior Finish
Stainless
Inlet Connection Size
4 Inches
Inlet Connection Type
Insertable

📏4-inch duct fit precision

🌡️-10 to +60°C temperature resilience

🛠️Galvanized steel & stainless steel durability

Frequently Bought Together

neverest® RKI 4“ - Backdraft Damper Shutter Inline for 4 Inch Dryer Duct for Retrofitting 4 Inch Ducting Prevents Unwanted Drafts in Metal Ducts in Line Draft Blocker - Fits Only with Metal Ducts

EesTeck 4" (Diameter) Adjustable 304 Stainless Steel Duct Clamps Hose Clamp Pipe Clamp Air Ducting Clamp worm drive hose clamps (4Pcs, 91mm-114mm)

4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector

Description

🌀 Elevate your airflow game with the Klimapartner RKI 4" – where precision meets silent power!

SILENT SECURE SEAL - Rubber strip gasket eliminates rattling and guarantees airtight closure, keeping your environment quiet and energy-efficient.
VERSATILE INSTALLATION - Designed for both horizontal and vertical setups, adapting effortlessly to your HVAC, dryer, or exhaust systems.
SEAMLESS 4 INTEGRATION - Perfectly engineered for standard 4-inch ventilation ducts, ensuring hassle-free retrofitting.
ROBUST MULTI MATERIAL BUILD - Galvanized steel housing with aluminum blades and stainless steel spring for unmatched longevity and corrosion resistance.
ENERGY SMART AIRFLOW CONTROL - Automatically blocks cold drafts and backflow, optimizing indoor climate and reducing energy waste.

The Klimapartner RKI 4" Professional Backdraft Damper is a premium inline spring-loaded valve designed for 4-inch metal ventilation ducts. Crafted from galvanized steel, aluminum, and stainless steel, it offers durable, corrosion-resistant performance. Its automatic flap prevents backflow and cold air intrusion, while the rubber seal ensures quiet operation. Suitable for horizontal or vertical installation, it’s ideal for HVAC, dryers, exhausts, and range hoods, delivering efficient airflow control and energy savings.

Specifications

Material	Galvanized Steel, Aluminum, Stainless Steel
Brand	neverest
Item dimensions L x W x H	10.5 x 10.5 x 6.5 Centimeters
Exterior Finish	Stainless Steel
Inlet Connection Size	4 Inches
Inlet Connection Type	Insertable
Outlet Connection Type	Flange
Number of Ports	2
Outlet Connection Size	4 Inches
Manufacturer	neverest
Country of Origin	USA
Item model number	neverest RKI 4
ASIN	B011KJMCUU

Have a Question? See What Others Asked

How much pressure does it take to open? No rating is given (in comparison, the expensive Aldes brand gives 0.04 to 0.08 in. w.g.)

In a *horizontal* duct installation, is there an optimal orientation for the spring/blades? (e.g., orient spring horizontally or vertically)? Thanks.

My vent lines are already merged below the roof, to a 90° 4" vent roof pipe cover. Will your cover work for me? My old flapper broke.

Go a kitchen exhaust should this be installed close to the fan or closer to the exterior wall.

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