Spiral Manufacturing Co., Inc. provides detailed low-pressure sheet metal gauge construction standards for fabricating rectangular ductwork used in residential and light commercial HVAC systems. Based on SMACNA guidelines, the company outlines recommended sheet metal gauges, reinforcement methods, and construction practices to ensure duct strength, rigidity, and reliable airflow performance. These standards help contractors, engineers, and fabricators select the appropriate materials for low-pressure applications while maintaining code compliance and installation efficiency. Backed by decades of industry expertise, Spiral Manufacturing supports dependable, high-quality duct fabrication for a wide range of HVAC projects.

Services Provided

Sunday: Closed
Monday: 7:00 AM to 5:00 PM
Tuesday: 7:00 AM to 5:00 PM
Wednesday: 7:00 AM to 5:00 PM
Thursday: 7:00 AM to 5:00 PM
Friday: 7:00 AM to 5:00 PM
Saturday: Closed

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Kenny Anderson

April 07, 2026
Nick T

February 17, 2026

Really helpful in handling a small, local order for sprial duct components. I had been ordering parts online, but was pleased to discover Spiral Manufacturing Co Inc.
Sam Tilley

May 16, 2025

I needed a few pieces for my dust collection setup. Even though I only ordered a few things, they treated me like a regular customer. Highly recommend and will be back again if I need more!
Hassan Noor

January 08, 2023

Not bad, but they have only 1 dock and a little bit tight, so slow down when u approach to the warehouse.
chen鏹

August 28, 2020