🚀 Elevate your airflow game with neverest® precision!
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.
| 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 |
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!
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
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.
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.
P**R
Well built. Shutters operate smoothly. Requires minimal air pressure to open.
Well built. Shutters operate smoothly. Requires minimal air pressure to open.
D**C
Okay but not particularly sturdy
I don’t understand the high reviews. From reading a few I’d saw the high reviews were for larger sizes. This review is for the 4 inch version which clearly doesn’t deserve a ton of stars.I like that it is only about 4 inches long and if you have a weak fan and not much wind the fact it only has 1 flapper spring may be an advantage for you. However compared to a much cheaper competitor (though 5 1/2 inches long) also on Amazon this unit is a terrible value and I returned it. Specifically:- despite seller’s statements it is not a sturdily made unit.- only has 1 flapper spring and I don’t want to hear it banging in the wind. Others have 2 springs.- photo in Amazon listing shows a removable pivot but the unit I received is not removable in case maintenance is needed later on. For this price it needs to be fixable i.e. removable.- neither the housing nor flapper are accurately made so to fill the gap a very wide foam gasket is glued in there for flapper to seal against. It seals well but the problem is that the huge gasket cuts the airflow area by nearly 60%!O.D. by the way is 3-7/8” so should easily fit 4” ductwork.
A**R
Works great
Works great!!! Thanks
Trustpilot
1 week ago
1 month ago
