Garage Door Extension Spring For 8'Ft.- 140 lbs Dark Blue

• Garage Door Extension Springs for 8' High - Single Loop
• Professional high tensile steel, Rated 10,000 Cycles 
• 27" relaxed; will stretch to 48

Note: These springs are for use on standard sectional doors only, The only way to get the proper extension spring is by door weight.. we recommend using a bathroom scale to weigh the door before ordering..we cannot tell you what your door weighs from a description of the door