Garage door spring repair you can count on. for fast and affordable garage door spring replacement. Warranties free estimates..Replace broken extension springs on your garage door. Easy step by step instructions for the experienced or novice DIYer..We carry High quality, Heavy Duty Garage Door Extension Springs for New and Old Garage Doors.Ideal Security Garage Door Extension Springs are designed Ideal Security Garage Door Extension Springs are designed for standard ft. 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 your springs If your springs sag .