Below are the sections of our catalog.

Round Order Form 1
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Rectangular Order Form 2
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Rectangular Order Form 3
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Langdon Standards
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Sure•Seal™ Spiral
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Sure•Clamp™ Spiral
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Sure•Clamp™ Access
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Spiral Round Pipe & Fittings
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Double Wall Round Pipe & Fittings
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Oval Duct & Fittings
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Rectangular Duct & Fittings
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Double Wall Rectangular Duct & Fittings
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Insulation & Liner
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Hoods
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Dampers & Louvers
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Curbs & Equipment Supports
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Accessories
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Common Symbols & Formulas
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Sealer - Hardcast Suregrip 404 (Solvent Based)
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Sealer - C.L. Ward Superseal (Water Based)
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