Acoustical Surfaces
American Decorative Ceilings
Arc, Inc.
Architectural Surfaces, Inc.
Armstrong
Ceilings Plus Products
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Chatfield-Clarke
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Classic Ceilings (Metal)
Conwed
Decoustics
Eckel Acoustic
Ecophone Products
Entol Industries
Envel Design Corporation
Faux Wood Beams, Moldings
Gage Metal Ceilings
Gordon Grid & Alpro Ceilings
Hilti
Hunter Douglas
ISC Supply
Lamvin
Maharam Fabrics
National Gypsum Company
Nudo Products
Powers Fasteners
Quiet Technology Systems
Rulon Company
Star Ceiling
Tectum Products
TiteBond Products
Trussbilt Security Ceilings
United States Gypsum
Wall Technology
Wenger
West General Acoustic Products

Guilford of Maine Fabric Selector Charts - Guilford of Maine Standard Fabric Color Chart
Koroseal Vinyl Color Chart  -  Wilsonart Standard Color Selector 
Steel Stud/Post Information  -  Rotofast Fastener
USG Seismic Ceiling Resource Center  -  Armstrong's answers to FAQ's