23 3100 - HVAC Ducts and Casings

GAF
Founded in 1886, GAF is the largest roofing manufacturer in North America. GAF offers a variety of fabricated metal ductwork options including in-wall duct systems, insulated flexible ductwork, manufactured housing systems, plenums & air returns, register boxes, roof top venting, starting collars & take-iffs, transitions & connectors, trunk & branch lines, and vents.

4specs Discussion Forum - Great place to ask questions about specifications, products and technical data. Free - no registration required to read or post (subject to moderation).

Specification Discussions - a wide range of issues on specifications - many full time and independent specifiers contribute their knowledge and experience.
Product Discussions - covers things you need to know before making product decisions.

AccuDuct Manufacturing - Spiral duct systems
AES Industries
Berner International Corporation - Air curtains, designed to save energy and create healthy, comfortable environments.
CertainTeed
EHG Duct - sound solutions for ductwork including round silencers, registers, and dust collection.

Hart & Cooley
Johns Manville - JM has an extensive offering of HVAC & plumbing insulation including boards/liners/wraps and pipe fittings.
Knauf Insulation - Knauf Eclipse™ Air Duct Board with ECOSE® Technology is designed for commercial and residential installations.
Kroy Industries - below slab ducts
Linx Industries - Linx Industries manufactures and distributes HVAC products, including ductwork and related products.
McGill AirFlow Corporation
NCA Manufacturing
Norfab Systems
Spiral Pipe of Texas

23 3100 - HVAC Ducts and Casings

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