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Equivalent Round Duct Calc App
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Flat Oval / Round Duct
Equivalent Round Duct Calc App
Installation Videos
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Why Spiral Duct
Energy Efficient
Easy to Install
Easy to Seal
Looks Great
Why Eastern
Range of Products
Range of Materials
Range of Sizes
Labor and Energy Savers
AMCA Certification
Customer Service
Buy America
Your Local Representative
Where to Use Spiral Duct
High-Performance Air Systems
Standard HVAC
Sound Control Applications
Underground
Fume Exhaust
Dust Removal
Architectural Applications
FAQ
How Do I Specify Spiral Duct?
Does Spiral Satisfy Leed?
Can I Paint Spiral Duct?
Where to Buy