Prime-Line B 513
Consists of 1/4 in W center groove wheel. Heat-treated, high-tension adjustable steel M-spring. Used by several patio door manufacturers.
| Bearing Type | : | Ball |
| Color | : | Gray |
| Finish | : | Unfinished |
| Includes | : | (2) #8 x 1 in Phillips Pan Head Sheet Metal Screws |
| Roller Edge Type | : | Concave |
| Spring Type | : | M |
| Suitable for | : | Sliding Screen Glass Doors |
| Material | : | Steel |
| Roller Diameter | : | 1 in |
| Roller Width | : | 1/4 in |
- Heat-treated high-tension steel spring