Bellmouth - SIDCO Spiral Duct Inc

HVAC Fittings · Die Stamped & Roll Formed · 22G Steel

Bell Mouth Fittings

Precision-manufactured from 22-gauge G60 galvanized steel. SIDCO bell mouth fittings deliver laminar, turbulence-free airflow with zero-leak connections — engineered for commercial and industrial HVAC systems from 3″ to 40″ diameter.

3″–40″

Diameter Range

22G

Gauge Steel

G60

Zinc Coating

24/7

Available

22-Gauge
Galvanized Steel

Zero-Leak
Connection

Low Pressure
Drop

Smooth Laminar
Airflow

Custom Sizes
Available

Rust-Resistant
G60 Coating

★ SIDCO MFG · Memphis, TN

Product Overview

Built for
Industrial
Precision

SIDCO bell mouth fittings are manufactured using premium 22-gauge galvanized steel with G60 and Paintgrip coatings for maximum corrosion resistance in demanding environments.

The iconic flared-end design significantly expands the intake area — creating smooth, turbulence-free airflow critical for dust collection, industrial ventilation, and commercial HVAC systems.

G60 Galvanized Paintgrip Steel Die Stamped Roll Formed Custom Sizing Memphis Made

Technical Specifications

Engineering
Excellence

22G

Steel Gauge

Heavy-duty 22-gauge galvanized steel provides superior rigidity and longevity in high-pressure HVAC environments.

40″

Max Diameter

Available from 3″ up to 40″ in standard sizes — covering the full spectrum of commercial and industrial duct systems.

G60

G60
Zinc

Coating Grade

G60 zinc coating provides corrosion protection at temperatures up to 390°F for harsh industrial conditions.

Mfg Methods

Die Stamped (3″–16″) for precision. Roll Formed (18″–40″) for large-diameter structural integrity at scale.

Product Showcase

Precision Engineered.
Built to Last.

Die Stamped · 3″ – 16″

Roll Formed · 18″ – 40″

Use Cases

Where Bell Mouth
Fittings Excel

From dust collection to large-scale HVAC, SIDCO bell mouth fittings are trusted across commercial construction, industrial manufacturing, and specialized ventilation — delivering consistent performance in the most demanding environments.

HVAC Systems

Commercial and industrial HVAC ductwork — smooth airflow and low pressure loss for peak system efficiency and energy savings.

Dust Collection

The flared bell entry maximizes capture velocity for woodworking, metalworking, and industrial dust collection equipment.

Fume Extraction

Draws smoke, chemical vapors, and hazardous particles away from workers in manufacturing floors and labs.

Router Hood Intake

Connects to router tables and CNC equipment to capture fine dust and debris at the source for cleaner shop environments.

Industrial Ventilation

Handles high airflow volumes, continuous vibration, and pressure changes in factories and production facilities.

Harsh Environments

G60 zinc coating resists rust in high-humidity, high-temperature, and chemically active industrial settings for long service life.

Why SIDCO

Trusted by
Contractors
Nationwide

For over a decade, SIDCO Spiral Duct Inc. has been Memphis's go-to manufacturer for spiral duct systems and HVAC fittings — combining in-house production with fast-turn shipping.

Manufactured in-house at our Memphis, TN facility for quality control at every step
Die Stamped (3″–16″) and Roll Formed (18″–40″) — the right process for every size
Custom diameters produced to client specifications with no minimum run requirement
22-gauge G60 galvanized and Paintgrip steel options for every application need
Available 24/7 — fast response, direct from manufacturer pricing

Memphis, TN · Available 24/7

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Let's Talk.

Direct from manufacturer. Custom sizes. Fast shipping.

+1 (901) 395-4595 Email Us

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