View on LOZ Suggested Retail: $40. DURA-LIFT Heavy Duty Extension Garage Door Spring 2-Pack (150 lb.). 150 POUND WEIGHT CAPACITY - two replacement springs for a 150 pound garage door using a sectional garage door extension spring system. DOUBLE LOOPED ENDS FOR STRENGTH - two loops to connect pulley system extend the cycle life of the springs. SIMPLE INSTALLATION - install new or replace old, rusty springs quickly (professional installation recommended). CORROSION RESISTANT - coated steel coils to help slow rusting process over spring life.. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.