V-shaped tension spring design is used by several patio door manufacturers. 1 In. high density polyethlene roller mounted on the end of a heat treated steel tension spring. 2 In. long V shaped flat spring inserts into the screen frame giving tension required as the door slides back and forth.
| SKU | 236004 | UPC | 049793005700 |
| Weight | 0.04 | Package Width | 4.85 |
| Package Length | 3.85 | Package Height | 0.7 |
| Model Number | B 570 | Brand | Prime Line |