DURA-LIFT 100 Pound Heavy-Duty Extension Garage Door Spring 2-Packs are extension spring replacements for broken sectional garage door extension springs for 7' tall doors. All DURA-LIFT garage door extension springs are manufactured from oil-tempered spring wire meeting  and are designed for a minimum of 10,000 door open and close cycles. Double-looped ends are standard to add double the resistance strength.

• 100 POUND WEIGHT CAPACITY - springs for 100 pound sectional garage doors using 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, make sure to measure the weight of your door (professional installation recommended)
• CORROSION RESISTANT - coated steel coils to help slow rusting process over spring life
• 1-YEAR WARRANTY - springs are warranted for 1 year from purchase date