| Business | Phone |
| Buist Sheet Metal Co 615 Webster St Nw, Grand Rapids 49504 | (616) 451-0272 |
| Certified Sheet Metal 2458 Waldorf Ct Nw, Grand Rapids 49544 | (616) 791-6900 |
| Exterior Metal Specialist Inc 270 Maynard Ave Sw, Grand Rapids 49534 | (616) 791-1950 |
| Grand Rivers Builders Inc 1034 Wealthy St Se, Grand Rapids 49506 | (616) 454-9337 |
| Universal Wall Systems 6119 28th St Se 1b, Grand Rapids 49546 | (616) 956-9299 |