The Glass Master Fiber Glass Duct Board Fabricating
Equipment is now manufactured by CertainTeed Machine Works

Glass Master's family of fiber glass duct board fabrication machines, hand tools and accessories are designed to help you fabricate fiber glass duct systems faster, more economically, and at a fraction of the investment of sheet metal forming equipment.

High quality, durable equipment have been the hallmark of the Glass Master name for 35 years.   They also exemplify CertainTeed Machine Works, who has been servicing the professional insulation contractor community since 1936.

Our engineering expertise, manufacturing experience and dedication to the industry guarantees we will continue to produce equipment you can rely on for fast, economical, high quality duct production. It's no wonder that thousands of our machines have been sold worldwide.

Call us with your duct board grooving needs.

Phone: 800-874-9135

Auto Groover
The GM E300-SM

Wide Board
The Auto-Loader System

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All trademarks are owned by Glass Master