| Business | Phone |
| American Window & Door Supply 124 W Main St, El Cajon 92020 | (619) 579-3782 |
| Boyce's Window Co 14392 Olde Highway 80, El Cajon 92021 | (619) 443-6464 |
| D & G Window & Door Svc 1047 N Johnson Ave, El Cajon 92020 | (619) 441-2680 |
| A-Window Tech 1275 E Main St # B, El Cajon 92021 | (619) 444-9391 |
| San Diego Dual Glaze 747 W Main St, El Cajon 92020 | (619) 444-1844 |
| Koala Glass Inc El Cajon 92020 | (619) 579-3683 |