HVAC Manual Damper knob White, Designed for .25 Inch Shaft dampers
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Description
🎯 Master your airflow with precision and style!
- BUILT TO LAST - High-quality plastic construction guarantees durability and long-term performance under daily use.
- PERFECT FIT PRECISION - Designed specifically for .25 inch shafts ensuring a snug, reliable connection every time.
- SEAMLESS HVAC CONTROL - Effortlessly adjust your damper from open to close with a smooth, ergonomic grip.
- COMPACT YET COMMANDING - 1.5-inch handle diameter offers maximum control without bulk—ideal for tight HVAC spaces.
- WARRANTY BACKED CONFIDENCE - Comes with a manufacturer warranty for peace of mind and trusted reliability.
This HVAC manual damper knob, crafted for .25 inch shafts, features a 1.5-inch ergonomic handle and durable plastic build. Designed for easy, precise control of ceiling dampers and round duct butterfly dampers, it ensures smooth operation from open to close. Backed by a manufacturer warranty, it’s the essential upgrade for professional-grade HVAC management.
Specifications
| Manufacturer | HollandElectronics.us |
| Size | 1/4 Inch |
| Color | White |
Reviews
S**R
Product as described.
I have been looking for replacement knobs for our ceiling air diverters and had been coming up empty. Diverters are 50+ years old. Reached out to an HVAC contractor and he shared these with me. They had the style of opening I needed. The openings are a little bigger than our posts, but we are going to make them work.
H**L
Worked well
Could not find original knobs but these knobs worked better easy to install and great appearance will buy again
D**Y
Little pricey
Fit ok and working well.
M**O
SLA 3D printed part, good luck finding anywhere else
My home was built in 1967 and the central air system was installed in the early 2000's. I have not been able to find replacement damper knobs for my register vents online anywhere. Maybe you could find them somewhere else but I wasn't about to waste time trying to find out.This is a 3D printed part made out of plastic resin via stereolithography (SLA) printing, which is a higher quality part in terms of tolerance and robustness as compared to cheaper fused deposition modeling (FDM) 3D printing.My only minor complaint is that the tolerance of the D-shape female end was a little too tight to fit on the male end of the damper shaft. I used WD-40 as lubrication to get the part to fit. Hopefully that doesn't damage the part as they are expensive for what they are.
N**K
Do not buy!
This knob is hollow and broke immediately when first used. The stem that has the D hole should have been solid. I would have paid extra for dependability.
J**N
fit
too big. Only received 1 and the website shows 2.
J**Y
Have an old house and these worked perfectly
The originals that I was replacing have a name on them and these I purchased are plain. But otherwise you couldn't tell the difference when looking up at the knob. And they are a good clear white and look perfect with the knew damper as well. I'm Very happy! I would buy these again, though I did my whole house so won't need to for years to come.
J**S
Plastic control knob
Very expensive for a replacement plastic knob. Easy to install though.
Common Questions
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