This roller assembly with M-shaped tension spring with a 1 in. steel ball bearing roller is used by a variety of patio door manufacturers. The heat treated tension spring is 2-5/16 in. long and shaped like an M, giving it the tension needed by the screen door to slide properly. Easy to install.
| SKU | 57531 | UPC | 049793005120 |
| Weight | 0.1 | Package Width | 3.85 |
| Package Length | 0.75 | Package Height | 5.8 |
| Model Number | B 512 | Brand | Prime Line |
| Manufacturer Name | PRIME-LINE PRODUCTS/SLIDE-CO |