Ideal Security garage door extension springs are designed for standard 7' high garage doors. They provide additional lifting power for manual and electric garage doors. Our springs are original equipment quality, made to last for many years. Replacing garage door springs can be done yourself if you're comfortable, but may not be a task for everyone. Before buying, please watch our how-to videos to ensure you're comfortable doing the work yourself. Garage door springs are color-coded to indicate weight capacity. Our springs follow industry-standard color coding. You should replace your springs with the same class of spring you currently have. You can use our handy spring selection guide to ensure you choose the right springs for your door. Verify your current springs before ordering and installing.