dura-lift heavy duty extension garage door spring 2-pack (110 lb.) dura-lift the dura-lift 110 pound heavy-duty extension garage door spring 2-pack is an extension spring replacement for broken sectional garage door extension springs for 7' tall doors. all springs are spray painted and oil tempered for corrosion resistance and longevity. technical details: for 110 pound garage doors ~25" coil-to-coil length double looped ends 2x extension springs included dura-lift 100% satisfaction guarantee: dura-lift products are warranted against defects or failures for one year from the purchase date. should you incur a defect or failure during this period, we will assist you or replace the product(s) at no additional cost. need application help? we know that you want to be sure that you are replacing the correct garage door hardware! if you have any questions about this product's compatibility for your specific application, please reach out and ask our experts! dasma warning: high spring tension can cause serious injury or death. do not adjust, repair or remove springs or parts to which springs are connected, such as steel brackets, cables, wood blocks, red colored fasteners or other parts of the counterbalance system. adjustments or repairs must only be made by a trained door systems technician using proper tools and instructions.