| Business | Phone |
| Horizon Industries Inc 8 Horizon Dr, Denville 7834 | (973) 361-9777 |
| John Petersen Electrical 3 Cramsey Pl, Denville 7834 | (973) 442-0944 |
| Deegan Electrical Contracting 26 Highwood Rd, Denville 7834 | (973) 625-9050 |
| Gene's Electric Inc Denville 7834 | (973) 989-0123 |
| Quality Electric Inc 350 Us Highway 46, Denville 7834 | (973) 625-0581 |
| Scout Electric Inc 18 Fox Run, Denville 7834 | (973) 627-2556 |
| Suburban Electric Denville 7834 | (973) 627-1510 |
| Wilkinson Electric Inc 113 Hillcrest Dr, Denville 7834 | (973) 625-1647 |
| Union Hill Electric Co 34 Magnolia Ave, Denville 7834 | (973) 627-4684 |