Heavy Duty J Top Mount Bifold Measurements | 2 Door Kits | Goldberg Brothers
| J Top Mount Roller Measurements | |
| Height Above Door | 6 inches |
| Roller Thickness | 2 inches |
| Roller Width | 3-1/2 inches |
| Roller Height | 4-1/2 inches |
| Wheel Diameter | 2-1/2 inches |
| Track Width | 2 inches |
| Track Thickness | 3/16 inches |
| Total Weight Capacity | 400 lbs |
| Minimum Door Thickness | 1-3/8 inches |
| Maximum Door Thickness | 2-1/4 inches |
| Door to Track Spacing | 1 inch |
