Couplings/Reducers

Coming SOON

Quick Order
Locations
Contact

Become a Customer 0

items

Products
Brands
View All Brands
Manufacturers
View All Manufacturers
Appliances
Lighting
- Chandeliers
- Fans
- Lamps
- Outdoor
- Pendants
- Sconces
Div 10
Brands
Locations
Contact
Become a Customer
Login
Register

Home
All Category
HVAC
Duct & Fittings
Fittings
Couplings/Reducers

Category

Couplings/Reducers (52) Category Couplings%2FReducers Couplings/Reducers

Brands

Heating & Cooling Products (32) Brands Heating+%26+Cooling+Products Heating & Cooling Products
Lukjan (11) Brands Lukjan Lukjan
Hart & Cooley® by Duravent (5) Brands Hart+%26+Cooley%C2%AE+by+Duravent Hart & Cooley® by Duravent
SEALTITE (3) Brands SEALTITE SEALTITE
HC Products (1) Brands HC+Products HC Products

Type

Non-Crimped Tapered (24) Type Non-Crimped+Tapered Non-Crimped Tapered
Non-Crimped Heavy Gauge Tapered (3) Type Non-Crimped+Heavy+Gauge+Tapered Non-Crimped Heavy Gauge Tapered
Non-Crimped (1) Type Non-Crimped Non-Crimped

Series

431 (25) Series 431 431
009 (2) Series 009 009
112 (2) Series 112 112
9431 (2) Series 9431 9431
451 (1) Series 451 451
RN Series (1) Series RN+Series RN Series

Section

Reducers/Increasers (11) Section Reducers%2FIncreasers Reducers/Increasers
Duct/Fittings (3) Section Duct%2FFittings Duct/Fittings

Size

4 x 3 in (3) Size 4+x+3+in 4 x 3 in
6 x 4 in (3) Size 6+x+4+in 6 x 4 in
10 x 8 in (3) Size 10+x+8+in 10 x 8 in
5 x 4 in (2) Size 5+x+4+in 5 x 4 in
6 x 3 in (2) Size 6+x+3+in 6 x 3 in
6 x 5 in (2) Size 6+x+5+in 6 x 5 in
7 x 6 in (2) Size 7+x+6+in 7 x 6 in
8 x 6 in (2) Size 8+x+6+in 8 x 6 in
8 x 7 in (2) Size 8+x+7+in 8 x 7 in
12 x 8 in (2) Size 12+x+8+in 12 x 8 in
12 x 10 in (2) Size 12+x+10+in 12 x 10 in
2 x 10 in (1) Size 2+x+10+in 2 x 10 in
4 x 10 in (1) Size 4+x+10+in 4 x 10 in
5 x 3 in (1) Size 5+x+3+in 5 x 3 in
6 in (1) Size 6+in 6 in
7 x 4 in (1) Size 7+x+4+in 7 x 4 in
7 x 5 in (1) Size 7+x+5+in 7 x 5 in
8 x 4 in (1) Size 8+x+4+in 8 x 4 in
8 x 5 in (1) Size 8+x+5+in 8 x 5 in
9 x 6 in (1) Size 9+x+6+in 9 x 6 in
9 x 8 in (1) Size 9+x+8+in 9 x 8 in
10 x 6 in (1) Size 10+x+6+in 10 x 6 in
10 x 7 in (1) Size 10+x+7+in 10 x 7 in
10 x 9 in (1) Size 10+x+9+in 10 x 9 in
12 in (1) Size 12+in 12 in
14 in (1) Size 14+in 14 in
14 x 12 in (1) Size 14+x+12+in 14 x 12 in
16 x 8 in to 12 x 8 in (1) Size 16+x+8+in+to+12+x+8+in 16 x 8 in to 12 x 8 in
16 x 12 in (1) Size 16+x+12+in 16 x 12 in
16 x 14 in (1) Size 16+x+14+in 16 x 14 in
18 x 16 in (1) Size 18+x+16+in 18 x 16 in
20 x 8 in to 16 x 8 in (1) Size 20+x+8+in+to+16+x+8+in 20 x 8 in to 16 x 8 in

Length

6-1/2 in (5) Length 6-1%2F2+in 6-1/2 in
5-1/4 in (4) Length 5-1%2F4+in 5-1/4 in
6 in (4) Length 6+in 6 in
6-3/4 in (3) Length 6-3%2F4+in 6-3/4 in
7 in (3) Length 7+in 7 in
6-1/4 in (2) Length 6-1%2F4+in 6-1/4 in
6-5/8 in (2) Length 6-5%2F8+in 6-5/8 in
7-1/4 in (2) Length 7-1%2F4+in 7-1/4 in
7-1/2 in (2) Length 7-1%2F2+in 7-1/2 in
4 in (1) Length 4+in 4 in
5-3/8 in (1) Length 5-3%2F8+in 5-3/8 in
5-3/4 in (1) Length 5-3%2F4+in 5-3/4 in
6-1/8 in (1) Length 6-1%2F8+in 6-1/8 in
7-3/4 in (1) Length 7-3%2F4+in 7-3/4 in
12 in (1) Length 12+in 12 in
12-11/16 in (1) Length 12-11%2F16+in 12-11/16 in

Gauge

Standard (19) Gauge Standard Standard
26 ga (7) Gauge 26+ga 26 ga
28 ga (5) Gauge 28+ga 28 ga
24 ga (1) Gauge 24+ga 24 ga

Material

Steel (37) Material Steel Steel

Finish

Hot Dipped Galvanized (32) Finish Hot+Dipped+Galvanized Hot Dipped Galvanized
Galvanized (5) Finish Galvanized Galvanized

Diameter

4 in ID x 4-13/16 in OD (2) Diameter 4+in+ID+x+4-13%2F16+in+OD 4 in ID x 4-13/16 in OD
3 in ID x 3-13/16 in OD (1) Diameter 3+in+ID+x+3-13%2F16+in+OD 3 in ID x 3-13/16 in OD
13 in OD (1) Diameter 13+in+OD 13 in OD

Couplings/Reducers

52 Results

Sort by

Items Per Page

37585 Heating & Cooling Products 43104030 Non-Crimped Tapered Reducer, 4 x 3 in, Standard Gauge

Manufacturer: Heating & Cooling Products

Brand: Heating & Cooling Products

Lee Supply #: 37585

Manufacturer Part #: 43104030

UPC: 66283300236

Sold As: 35/CTN

Carmel

Price break available

Compare

37622 Heating & Cooling Products 43106046 Non-Crimped Heavy Gauge Tapered Reducer, 6 x 4 in, 26 ga

Manufacturer: Heating & Cooling Products

Brand: Heating & Cooling Products

Lee Supply #: 37622

Manufacturer Part #: 43106046

UPC: 66283300240

Sold As: 20/CTN

Carmel

Price break available

Compare

37605 Heating & Cooling Products 43105040 Non-Crimped Tapered Reducer, 5 x 4 in, Standard Gauge

Manufacturer: Heating & Cooling Products

Brand: Heating & Cooling Products

Lee Supply #: 37605

Manufacturer Part #: 43105040

UPC: 66283300238

Sold As: 24/CTN

Carmel

Price break available

Compare

37681 Heating & Cooling Products 43108060 Non-Crimped Tapered Reducer, 8 x 6 in, Standard Gauge

Manufacturer: Heating & Cooling Products

Brand: Heating & Cooling Products

Lee Supply #: 37681

Manufacturer Part #: 43108060

UPC: 66283300244

Sold As: 24/CTN

Carmel

Price break available

Compare

37656 Heating & Cooling Products 43107060 Non-Crimped Tapered Reducer, 7 x 6 in, Standard Gauge

Manufacturer: Heating & Cooling Products

Brand: Heating & Cooling Products

Lee Supply #: 37656

Manufacturer Part #: 43107060

UPC: 66283300242

Sold As: 24/CTN

Carmel

Price break available

Compare

37732 Heating & Cooling Products 43110080 Non-Crimped Tapered Reducer, 10 x 8 in, Standard Gauge

Manufacturer: Heating & Cooling Products

Brand: Heating & Cooling Products

Lee Supply #: 37732

Manufacturer Part #: 43110080

UPC: 66283300249

Sold As: 24/CTN

Carmel

Price break available

Compare

37688 Heating & Cooling Products 43108070 Non-Crimped Tapered Reducer, 8 x 7 in, Standard Gauge

Manufacturer: Heating & Cooling Products

Brand: Heating & Cooling Products

Lee Supply #: 37688

Manufacturer Part #: 43108070

UPC: 66283300246

Sold As: 24/CTN

Carmel

Price break available

Compare

37633 Heating & Cooling Products 43106050 Non-Crimped Tapered Reducer, 6 x 5 in, Standard Gauge

Manufacturer: Heating & Cooling Products

Brand: Heating & Cooling Products

Lee Supply #: 37633

Manufacturer Part #: 43106050

UPC: 66283300241

Sold As: 20/CTN

Carmel

Price break available

Compare

581645 RX410403 - LUKJAN 4-3 TAPER REDUCER NO CRIMP 26GA

Manufacturer: Lukjan

Brand: Lukjan

Lee Supply #: 581645

Carmel

Price break available

Compare

37748 Heating & Cooling Products 43112100 Non-Crimped Tapered Reducer, 12 x 10 in, 28 ga

Manufacturer: Heating & Cooling Products

Brand: Heating & Cooling Products

Lee Supply #: 37748

Manufacturer Part #: 43112100

UPC: 66283300251

Sold As: 24/CTN

Carmel

Price break available

Compare

581649 RX410604 - LUKJAN 6-4 TAPER REDUCER NO CRIMP 26GA

Manufacturer: Lukjan

Brand: Lukjan

Lee Supply #: 581649

Carmel

Price break available

Compare

359949 Heating & Cooling Products 94310646 Non-Crimped Heavy Gauge Tapered Reducer, 6 x 4 in, 26 ga

Manufacturer: Heating & Cooling Products

Brand: Heating & Cooling Products

Lee Supply #: 359949

Manufacturer Part #: 94310646

UPC: 23429

Sold As: 20/CTN

Carmel

Price break available

Compare

Showing 1 - 12 of 52 entries

Corporate Office
6610 Guion Road
Indianapolis, IN 46268
(800) 873-1103

Customer Service

News
Warranties & Returns

Account

Register
Login
My Account
Pay Invoice Online

About Us

Our Story
Contact Us
Industries We Serve
Employment Application
Careers
Blog

Resources

Find Your Lee Branch
Product Training
Brands
Find a Heil Elite Dealer
Utility Rebate Submission
Credit Application
Build Your Own Shower Door
Financing
News & Resources
Buying Guides

Sign up for the latest deals & news!

Email Address

Terms & Conditions Privacy Policy Cookie Policy Consent Preferences Do not sell or share my personal information Limit the use of my sensitive personal information 2025 Lee Supply. All rights reserved.

Password

Remember me Forgot password?

General popup heading

Select Customer

Subscribe to our mailing list for the latest news and promotions!

Company Name

First Name *

Last Name *

Email *

Branch *

* Required field

Availability

No Records Found

My Cart

Item(s)

...

Lee Supply #:

Manufacturer Part #:

Qty:

Lead Time:

View Cart

Contact email address is missing from your account.
Please enter your email address and click update.

Email *