| Company | City | State / Province | Country | Phone | Website |
|---|---|---|---|---|---|
| Gagne & Son Concrete Blocks, LLC | Belgrade | ME | US | (207) 495-3313 | gagneandson.com |
| General Shale Brick | Johnson City | TN | US | (423) 282-4661 | generalshale.com |
| General Shale Brick | Kernersville | NC | US | (423) 282-4661 | generalshale.com |
| General Shale Brick | Piney Flats | TN | US | (423) 538-3332 | |
| General Shale Brick | Chattanooga | TN | US | (423) 282-4661 | |
| General Shale Brick | Humboldt | TN | US | (423) 282-4661 | generalshale.com |
| General Shale Brick | Englewood | CO | US | (423) 282-4661 | generalshale.com |
| Glenwood Mason Supply Co., Inc. | Brooklyn | NY | US | (718) 859-6500 | glenwoodmason.com |
| Glenwood Masonry Supply | Brooklyn | NY | US | (718) 859-6500 | |
| GMS-Jonesboro, an Oldcastle Company | Jonesboro | GA | US | (770) 804-3363 | belgard.biz |
Concrete Masonry and Hardscapes Association