| Business | Phone |
| Maple Leaf Windows & Doors 44 Lowell Ave, St Catharines L2R 2E1 | (905) 684-7115 |
| Nu-Craft Window & Door Co 188 Bunting Rd, St Catharines L2M 3Y1 | (905) 685-0767 |
| Robertson Window & Siding 37 Stanmary Dr, St Catharines L2N 5T6 | (905) 935-9675 |
| Source Home Products Ltd 5 Peacock Bay, St Catharines L2M 7N8 | (905) 646-8995 |
| Source Home Products 14 Woodington Cres, St Catharines L2T 3T7 | (905) 688-9535 |
| Duo-Temp Niagara Ltd 105 Merritt St, St Catharines L2T 1J7 | (905) 227-6692 |
| Fleming Windows & Mirrors Ltd 29 Maywood Ave, St Catharines L2R 1C5 | (905) 684-8774 |
| Gehres Windows & Doors Ltd 26 Nihan Dr, St Catharines L2N 1L1 | (905) 646-8088 |