| Business | Phone |
| Auburn Door Inc 4030 Manitoba St, Auburn Hills 48326 | (248) 332-7031 |
| Door-Man Mfg Co 2498 Commercial Dr, Auburn Hills 48326 | (248) 377-9200 |
| Gamalski Building Specialties 3851 Auburn Rd, Auburn Hills 48326 | (248) 852-7050 |
| Hardwood Door & Bevel Co 2333 Commercial Dr, Auburn Hills 48326 | (248) 377-9460 |