| Companies |
| Accuride International |
| Architectural Glass Railings by J.M. Gruca |
| Architectural Louvers |
| Architectural Railings & Grilles, Inc. |
| Armortex |
| Avanti Systems USA |
| Battic Door Energy Conservation Products |
| Belden Brick Co. |
| Bird-B-Gone, Inc. |
| BlueWater Mfg |
| Boon Edam Inc. |
| Columbus Glass Block |
| Da-Lite Screen Co. |
| dmf LIGHTING |
| Draper, Inc. |
| Elite Crete Systems, Inc. (Headquarters) |
| Feeney Architectural Products |
| Florence Manufacturing Company |
| Garlock Safety Systems |
| Howe Green |
| Hurd Windows and Doors |
| HWI Global |
| JP Specialties, Inc. |
| Knauf Insulation |
| LaHabra |
| Landscape Forms Inc. |
| Major Industries Inc. |
| MarShield - Div. of Mars Metal Company |
| Maxxon Corp. |
| Merkrete Systems |
| METROBRICK® Thin Brick by Ironrock |
| Metropolitan Ceramics by Ironrock |
| Mortar Net® USA, Ltd. |
| National Gypsum Co. |
| Niland Co. |
| Nystrom Building Products |
| Par-Kut International, Inc. |
| Parex USA |
| Penetron International |
| Preferred Bleachers and Theater Seating |
| Ray-Bar Engineering Corporation |
| Reliance Foundry Co. Ltd. |
| Ruskin |
| Simplified Safety Inc. |
| SlipNOT® Metal Safety Flooring Div. |
| Somay Products, Inc. |
| Sto Corp. |
| Stone Panels, Inc. |
| Stromberg Architectural Products, Inc. |
| Tectum Inc. |
| The Sherwin-Williams Company |
| Total Security Solutions Inc |
| TRACO |
| UNICEL Architectural Corp. |
| Vehicle Inspection Technologies |
| Willard Shutter Co., Inc. |