| Business | Phone |
| Adams & Assoc Bldg Specialties 8750 Point Park Dr 2009, Houston 77095 | (281) 656-2880 |
| Griesenbeck Architectural Prod 5122 Steadmont Dr, Houston 77040 | (713) 781-3287 |
| Klinger Specialties Direct 2611 Couch St, Houston 77008 | (713) 861-4213 |
| Hudsons Building System 10412 Rockley Rd, Houston 77099 | (281) 933-9354 |