For over three decades, Rossi has lead the innovations in air volume regulators – more commonly known as dampers. We designed the first ever round damper blades with a continuous bar, replacing flimsy spring loaded blades and eliminating install times. Then, we introduced our Twistlock regulator as a replacement for wingnut-locking handles which vibrate loose, rattle & disrupt the air balance. Next, our snap-in bushings changed the game in damper assemblies, eliminating leakage and saving time & labor. Most recently, our patented positive locking regulators, the Everlock and the Megalock disrupted the industry yet again. Now, you can just set it and forget it, knowing your air balance is locked in place. All Rossi components (regulators, bushings, blades & bars) are designed to assembly together in under 90 seconds (our “speedy assembly”) to save you time & labor in your duct shop.
Take a look at our Patented Positive-Locking regulators as well as our Hand-Twist Locking air flow regulators.
Take a look at our Patented Positive-Locking regulators as well as our Hand-Twist Locking air flow regulators.
Take a look at our Patented Positive-Locking regulators as well as our Hand-Twist Locking air flow regulators.
Take a look at our Patented Positive-Locking regulators as well as our Hand-Twist Locking air flow regulators.
Drill 3/4" holes on each side of your sheet metal sleeve and click the Snap-In Bushings into place
Holding the blade in position, pass the 3/8" square bar through the bushings and channel in the blade
Spotweld or rivet the regulator in place, making sure the handle and blade are in corresponding positions
Center the blade and secure the system with a self-drilling screw.
More Reasons To
Our products are 100% designed, engineered and manufactured in the U.S.A.
We sell direct to duct fabricators and have quantity discounts to save you big money
Our handles, bearings & blades assemble in 90 seconds, boosting your duct fab productivity
Our products comply with SMACNA standards and our materials are UL-Listed / Plenum-rated
"We have a customer that swears by the positive locking regulators. I think your positive locking regulators are extremely innovative.”
Plenums Plus | Chula Vista, CA
"From the moment I received the samples, I noticed the build quality and strength of the Rossi dampers far exceeded the traditional wing-nut and floppy dampers of old. Rossi is our pick when it comes to choosing the ultimate damper that will not disappoint, all at a competitive price.”
Core States Group | Rogers, AR
“The Everlock’s positive-locking regulator one hand operation is a real time saver for us when air flow balancing our duct systems.”
Coziahr Heating and AC Council | Bluffs, IA
"Top notch products and service!”
Dixie Metal Products | Memphis, TN
"Great customer service from start to finish. Placed an order recently with Rossi
and they were really helpful and very knowledgeable.“
EWC Controls | Englishtown, NJ
“Spinfinity uses Rossi products exclusively on our bellmouth and conical dampers, and the guys in the shop love how easy they are to install. Our customers like the Rossi Hardware for its ease of use in the field and its durability. Thanks for making such great products!”
Spinfinity | Algona, WA
"We have had nothing but great customer service from the Rossi team and we really do appreciate that along with the great product Rossi provides to us. Your damper blades have decreased our install times for assembly and all of the crew appreciates the simplicity of the design.”
General Sheet Metal Works, Inc. | Clackamas, OR
"Really impressive product. I wish we would have had it for years as it would have solved several balancing issues.”
R.B. Akins Company | Oklahoma City, OK
“This product is superior to others in this market – that’s why they are all trying to copy it.”
Southerntier Custom Fabricators, Inc. Elmira, NY
“This has been wonderful for our business and we are genuinely grateful for the jump in our turnover. Our customers are stoked with the product and Rossi is one of our favorite suppliers.”
LIMS Imports | Auckland, New Zealand
"I am very well pleased with your dampers. Wish I had known about these 30 years ago… I first used the wingnut types since that was all my suppliers offered. Never was too happy with them and you never really knew just what position you had them in because there is so much play in them… It is only recently that I discovered Rossi and use these dampers exclusively now. Thanks for a great product.”
Atlantis Heating & Cooling | Decatur, GA
"Our communication with Rossi is usually via email and this works well from ordering, to receiving the sales acknowledgments to shipping. Pretty happy with all."
Superior Duct Fabrication | Pomona, CA
"A quality product at a lower cost that reduces shop installation time. When installed there are no tools needed for airflow adjustments. I have been buying these for 11 years now and am 100% satisfied. Great people to work with!"
Western Allied Mechanical, Inc. | Menlo Park, CA
“We are very pleased with the quality of the hardware we use from Rossi. It is very durable, very quick and easy to install on our products. We have been doing business with them for 10+ years, have had no issues with the product and they have always gone above and beyond if we ever have any issues. Great company with great products!”
Stamped Fittings, Inc. | Elmira Heights, NY
"Ever since we were introduced to Rossi damper hardware we were hooked. The damper hardware is of great quality and excellent design. We have been very pleased with the service and staff. Couldn’t ask for more.”
American Heating, Inc. | Portland, OR
"Since we’ve been using Rossi products our customers can’t stop raving about the dampers. Thanks."
Superior Sheet Metal | Hudson, NH
“We have been using Rossi Hardware for over 2 years now and could not be happier with the product. The quality of the hardware is second to none and the knowledgeable and helpful staff make it even that much better of a product.”
Combined Mechanical Contractors Ltd. | Vernon BC, Canada
"We have been buying Rossi products for 30 years, and I appreciate the excellent quality and quick turnaround your entire team provides.”
Mina Corporation | San Francisco, CA
“Rossi damper hardware is easy to use and looks good installed. It is an economical alternative to use when making dampers for stainless and aluminum duct.”
R & D Heating and Sheet Metal | Perry, OH
“Thank You for making such a great product! I firmly believe that using your dampers exclusively has set us apart from other sheet metal contractors in our area. When air balancing contractors find out we performed the work on a project ahead of them, they know they won't be wasting time looking for damper handles buried under insulation, or struggling to adjust an inferior quality regulator.”
Eastern Vent Systems, Inc. | Pelham, NH
"Rossi dampers are head and shoulders above the standard wing nut style dampers. They may cost a little more but when you consider the quality of the damper they are worth every penny!”
Haley's Metal Shop, Inc. | Biddeford, ME
"I am glad we found Rossi Hardware. You have a quality product that is a time saver and our customers love them - they always ask for the orange handle damper quads. Thank you for being a part of Quicktin’s team and helping us make a quality product for our customers!”
Quicktin | Tacoma, WA
“I like Rossi’s customer service. Anytime we have any questions or need anything, Rossi is quick to get back with us.”
Set Duct Manufacturing, Inc. | Detroit, MI
"High Quality Products! Professional Customer Service!"
Northern Mechanicals, Inc. | Norwood, NY
“Rossi - high quality at a reasonable price. Also great friendly service.”
Wright Comfort Solutions | Hollis, OK
“I think it is safe to say that I am probably one of the oldest customers of Rossi and not one time have I ever had an issue with their Customer service or the quality of their product. The first time I saw their Rossi Dampers I knew we needed to start using them in our shop and we have saved many hours of fabrication time because they are so easy to install. Rossi is and has been over the years the best company I have ever had to deal with and I have been in the sheet metal trade for over 45 years.”
Harris | Bellingham, WA
“We love Rossi’s simple, elegant and effective design of the damper. Will definitely incorporate your products from now on.”
H-Square Mechanical | San Jose, CA
“Rossi Damper Hardware is quickly becoming the industry standard and preferred by our customers.”
U.S. Engineering | Westminster, CO
“Rossi Everlock technology has made adjusting dampers in our production process easy and eliminated slippage ensuring our flow rates are on point.”
Viskase | Osceola, AR