| Business | Phone |
| Houston Automatic Door 9103 Emmott Rd, Houston 77040 | (713) 856-9569 |
| A & A Fence & Iron 7519 Glen Falls St, Houston 77049 | (281) 459-1400 |
| A-1 Overhead Doors 5829 W Sam Houston Pkwy N 610, Houston 77041 | (281) 488-6600 |
| Automatic Entry Systems 5722 Bingle Rd, Houston 77092 | (713) 686-5736 |
| Door Automation 903 Hodgkins St, Houston 77032 | (281) 449-4545 |
| Dor-O-Matic 13610 Hollister, Houston 77090 | (281) 569-2920 |