| Business | Phone |
| Builders Direct Supply 1070 Commerce St # B, San Marcos 92078 | (760) 471-6377 |
| California Replacement Windows 1210 Barham Dr, San Marcos 92078 | (760) 480-5575 |
| C V San Marcos Windows & Doors 1810 Diamond St, San Marcos 92078 | (760) 736-8070 |
| Crystal Windows 574 E Mission Rd # A, San Marcos 92069 | (760) 510-1223 |
| Pacific Coast Glazing 1525 Fulton Rd, San Marcos 92069 | (760) 741-1881 |