| Companies |
| Agriboard Industries |
| Architectural Glass Railings by J.M. Gruca |
| Architectural Railings & Grilles, Inc. |
| Armortex |
| Avanti Systems USA |
| Belden Brick Co. |
| Bird-B-Gone, Inc. |
| BlueWater Mfg |
| Boon Edam Inc. |
| Draper, Inc. |
| Elite Crete Systems, Inc. (Headquarters) |
| Feeney Architectural Products |
| Florence Manufacturing Company |
| Garlock Equipment Company |
| Haddad-Wylie Industries |
| Heritage Window and Door, Inc. |
| Hunter Douglas Contract - Ceilings |
| ICS Penetron Intl. Ltd. |
| Knauf Insulation |
| LaHabra |
| Major Industries Inc. |
| MarShield - Div. of Mars Metal Company |
| Mer-Krete Systems |
| Mortar Net® USA, Ltd. |
| National Gypsum Co. |
| Nawkaw Corporation |
| Niland Co. |
| Nystrom Building Products |
| Par-Kut International, Inc. |
| Parex |
| Preferred Seating |
| Ray-Bar Engineering Corporation |
| Ruskin |
| SlipNOTŪ Metal Safety Flooring Div. |
| Smoke Guard, Inc. |
| Sto Corp. |
| Stone Panels, Inc. |
| Tectum Inc. |
| The American Tin Ceiling Company |
| UNICEL Architectural Corp. |
| Vehicle Inspection Technologies |
| Willard Shutter Co., Inc. |