1. Hillsdale Door & Operator 120 S Broad St, Hillsdale, MI 49242 Coordinate: 41.91445,-84.62834 Phone: (517) 437-3202
2. Hillsdale Glass & Door Inc 2900 Lilac Rd, Hillsdale, MI 49242 Coordinate: 41.82241,-84.66849 Phone: (517) 437-4425