Check the listing for details. NEW Replacement Heavy Duty Extension Garage Door Spring 150lb 2-PACK EZ Install. Condition: New. Listed at 32.99 USD. This DURA-LIFT Heavy Duty Extension Garage Door Spring for 150 lbs. 7 tall garage doors is an extension spring replacement for broken sectional garage door extension springs. All springs are oil tempered for corrosion resistance and clean handling. 150 lbs. weight capacity - spring for 150 lbs. garage door using extension spring system Springs for your sectional garage door - replacement extension springs based on your garage door weight Simple installation - install new or replace old, rusty springs quickly (professional installation recommended) Corrosion resistant - oil tempered steel coils to help slow rusting process over spring life 1-year warranty - springs are warranted for 1 year from purchase date for 150 lbs. garage doors Dimensions Spring Length (in.) 28 Details Garage Door Part/Accessory Type Extension Spring Material Steel Pack Size 2 Pack