about us

Zoro has a simple mission—
We help small business stay competitive!

We do this by offering more than 750,000 great products at super low prices. Small businesses have historically been at a disadvantage to larger companies who can buy stuff at lower prices because of their size. We want to change that!

Zoro has most of the products that the “big guys” have and we offer every single one of them at an everyday low price. There are no complex discount structures to understand. Every customer pays the same low price for an item—whether you want to buy one or one thousand!

We have our headquarters in Buffalo Grove, IL—though we are petitioning the town to rename itself Fox Grove. (We’re coming for you, Buffaloes.) And we ship orders out of six warehouses strategically located across the country. More specifically, they are in California (one in sunny SoCal and one in breezy NorCal), Illinois (the Land of Lincoln), South Carolina (the Land of Mustard BBQ sauce), Texas (the warehouse there is bigger), and Wisconsin (the Land of the Fonzie Statue).

Like you, we believe that the key to success is to always put our customers first.

contact us

We live for the moments that we can make you happy—that’s the truth!

Most of our business occurs through the internet. However, we know that there are times when you need to communicate with a person. Our customer service staff is here to help you. You can contact us in the way that works best for you.

Our customer service hours are Monday thru Friday from 7am to 7pm (CT) and Saturdays from 9am to 2pm (CT).

Si necesita ayuda en español, por favor, comuníquese con nosotros por teléfono. Gracias.

855.BUY.ZORO (855.289.9676)

855.FAX.ZORO (855.329.9676)

Contact Customer Service

using our site

Zoro has designed a unique and intuitive product search feature.

All you need to do is select the product attribute values you are looking for within your search results (size, color, material, etc.) by clicking on the value you want, and the products that meet the criteria you have chosen are immediately shown in a table right below where you made your selections.

The more specific you are in your attribute selections—the narrower the search results will become in your very own “custom made” product table!

If you prefer to search using manufacturer model #, a competitor's part number or a Zoro part number, just enter that number into the “search bar” at the top of the page, you will immediately be taken to a page that contains the item.

catalog request

Top Products Guide

Right now, Zoro’s FULL CATALOG is our website. So, you have full access to it all the time.

To request our Top Products Guide, please click below and fill out the form. Catalog requests may take up to 3 weeks to fulfill so we have also included a pdf version of the catalog to download.

In addition, you will automatically be placed on the mailing list once you buy from Zoro.

resource den

Resource Den

Need some help? We are here for you! We have awesome supplemental resources to help you be prepared, find the right items, and get the job done.

Low-Leakage Volume Control Dampers

Description: Frame Material: Galvanized Steel; Max. Temp. (F): 180
Product Options
ImageItemTypeDamper Dia. (In.)Frame Height (In.)Frame Depth (In.)Duct Dia. (In.)Duct Height (In.)Frame MaterialBlade (Gauge)Frame (Gauge)Max. Velocity (FPM)BearingsPressure Differential Max.Frame Width (In.)Duct Width (In.)Blade MaterialMfr.#ZoroItem#Ships fromPriceQty.
Round Control DamperRound, Single Blade5-7/8-8-1/46-Galvanized Steel14203000Stainless Steel4" wg--Galvanized Steel3HGN7G3398211
Volume Control DamperSquare 3V-Blade, Low Leakage-9-3/45-10Galvanized Steel16163000Synthetic (acetal) Sleeve Type5" WG9-3/410-2LRY6G0585907
Square Control Damper3V-Blade, Low Leakage-17-3/45-18Galvanized Steel16163000Synthetic (acetal) Sleeve Type5" WG17-3/418-2LRY9G1824794
Square Control Damper3V-Blade, Low Leakage-23-3/45-24Galvanized Steel16163000Synthetic (acetal) Sleeve Type5" WG23-3/424-2LRZ1G1826903
Round Control DamperRound, Single Blade11-7/8-8-1/412-Galvanized Steel14203000Stainless Steel4" wg--Galvanized Steel3HGP1G1439934
Round Control DamperRound, Single Blade9-7/8-8-1/410-Galvanized Steel14203000Stainless Steel4" wg--Galvanized Steel3HGN9G1606665
Square Control DamperFabricated Airfoil, Ultra Low Leakage-15-3/45-16Galvanized Steel14164000Synthetic (acetal) Sleeve Type8" wg15-3/416Galvanized Steel3HGN4G1642785
Square Control DamperFabricated Airfoil, Ultra Low Leakage-23-3/45-24Galvanized Steel14164000Synthetic (acetal) Sleeve Type8" wg23-3/424Galvanized Steel3HGN6G3295214
Round Control DamperRound, Single Blade7-7/8-8-1/48-Galvanized Steel14203000Stainless Steel4" wg--Galvanized Steel3HGN8G3233876
Square Control Damper3V-Blade, Low Leakage-15-3/45-16Galvanized Steel16163000Synthetic (acetal) Sleeve Type5" WG15-3/416-2LRY8G2043194
Square Control Damper3V-Blade, Low Leakage-11-3/45-12Galvanized Steel16163000Synthetic (acetal) Sleeve Type5" WG11-3/412-2LRY7G0870685

: Ships from Zoro.

: Ships from manufacturer.