| Business | Phone |
| Window Panes Gaithersburg 20879 | (301) 670-5663 |
| Window Place 948 Gentlewood St, Gaithersburg 20878 | (301) 990-7313 |
| Windows & Siding For Long Fnc 315 E Diamond Ave, Gaithersburg 20877 | (301) 963-1870 |
| Advanced Window Inc 7630 Airpark Rd, Gaithersburg 20879 | (301) 670-0700 |
| C C Fellowship Windows 267 Kentlands Blvd # 1034, Gaithersburg 20878 | (301) 353-0654 |
| Champion Window Co 8340 Helgerman Ct, Gaithersburg 20877 | (301) 990-3001 |
| Rockville Window & Door 7404 Lindbergh Dr # E, Gaithersburg 20879 | (301) 762-6663 |
| Dream Home Remodeling 901 Russell Ave, Gaithersburg 20879 | (301) 963-3201 |
| Macklin Contracting 25220 Woodfield School Rd, Gaithersburg 20882 | (301) 253-1663 |