neverest® RK 4" Professional Backdraft Shutter Damper Connector Duct Fits Only with Metal Ducts
Details
- Size4 Inch
- MaterialGalvanized
- Brandneverest
- ColorSilver
- Item dimensions L x W x H22.44 x 20.47
- Connector TypeFlange
Description
🚀 Elevate your airflow game with neverest® precision!
- SILENT EFFICIENCY - Internal foam strip and smooth-running spring eliminate rattling for whisper-quiet airflow control.
- TEMPERATURE RESILIENCE - Operates flawlessly between 14°F and 140°F, perfect for year-round HVAC protection.
- VERSATILE INSTALLATION - Fits metal ducts only, installs horizontally or vertically with easy flange connection for seamless integration.
- PRECISION ENGINEERED DURABILITY - Galvanized steel frame with aluminum blades ensures long-lasting performance and corrosion resistance.
- MULTI APPLICATION HVAC ESSENTIAL - Ideal for ACs, dryers, exhausts, range hoods, and heating ducts to prevent unwanted backdrafts.
The neverest® RK 4" Professional Backdraft Shutter Damper Connector is a robust HVAC accessory crafted from galvanized steel and aluminum, designed exclusively for metal ducts. It features an automatic flap with a stainless steel spring and foam strip to prevent backflow and noise, operating efficiently across a wide temperature range (14°F to 140°F). Easy to install horizontally or vertically, it enhances ventilation systems in air conditioners, dryers, exhausts, and heating ducts, backed by a 2-year warranty.
Specifications
| Size | 4 Inch |
| Material | Galvanized Steel |
| Brand | neverest |
| Color | Silver |
| Item dimensions L x W x H | 22.44 x 20.47 x 15.75 inches |
| Connector Type | Flange |
| Exterior Finish | Aluminum |
| Thread Type | CW |
| Item Weight | 140 Grams |
| Number of Pieces | 1 |
| Manufacturer | neverest |
| Part Number | 40545030039031 |
| Item Weight | 4.9 ounces |
| Product Dimensions | 22.44 x 20.47 x 15.75 inches |
| Country of Origin | China |
| Is Discontinued By Manufacturer | No |
| Finish | Steel |
| Item Package Quantity | 1 |
| Usage | Use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents, and other HVAC applications. |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 2 years |
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Reviews
E**F
Neverest® RK 5" is an Excellent duct damper and Works with the slightest amount of air movement.
Excellent duct damper. I order and received a different 5" damper bade by ECOPRO originally but there were two springs on the 5" damper flaps, and it took quite a force to push open the flaps, so I ended up returning that and ordering the Neverest® RK 5" Backdraft Shutter Damper. The damper opens with a minimal amount of pressure and the quality of the unit is great. My issue was that we have a down draft cooktop and when there was a descent amount of wind outside, we would get a flow of cold air (IT was in the early spring) blowing out the downdraft grill on the cooktop, so I needed to prevent the wind draft from blowing into the ducting from outside. I installed the Backdraft Shutter Damper in a 5" metal flexible duct, and it took about 45 minutes from start to finish to complete the job. Now even with the slightest outside breeze the damp shuts and does not allow any draft into the house!
D**R
Good Quality- Worked For City Code Inspection Requirement For Outdoor Commerical Dryer
Good Quality- Worked for City Code Inspection Requirement for outdoor Commerical Dryer. Install straight forward with arrows as directed for flow / operation of ducting flapper. Installed with very short sheet metal screws to prevent lint build up inside ducting. Can be installed with hose clamps if non city code requirement.
M**Y
Two springs
This has two springs. I ended up removing one of the springs to make it open easier. The foam lip had a small gap I just taped up. It installed easily and fixed the backdraft from our stove top.
J**.
Perfect as the description
Worked perfect, no more wasted AC or heating. Did have to caulk around the perimeter and then use metal duct tape
L**.
Effective!!
For years my kitchen exhaust was extremely cold Air coming in cold from vent through the 2 car garage about20 feet of 6 inch ventAnyway quick install on flexible and rigid( perfect fit. No cutting or crimping) taped with aluminum tape done! No back draft at all. Thank you makers of this product !
L**E
works great for multi family cooking vent system
use this to block the backflow cooking smell from neighbors in the same building. it blocks 99% of the smell, and easy clean. recommended.
A**R
Works great
Works great!!! Thanks
M**H
8 inch backdraft preventer
It was to tight for the 8 inch exhaust tube for my stove. The quality seems ok for the money.
Common Questions
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