Garage Door
Extension Springs

If you need reliable, long-lasting extension springs, we’re ready.

Every customer has unique requirements, which is why we customize our durable extension springs to fit your exact needs.

Iowa Spring manufactures high-quality extension springs for garage doors, industrial equipment, trailers, and many other applications. While each spring is built to your specifications, they all share the same dependable performance and American-made craftsmanship.

Sizing and finishing capabilities:

  • Standard oil-tempered, hard drawn and galvanized wire diameters
    in stock up to .625”
  • Stock extension springs for 7’, 8’, 9’, and 10’ doors
  • Springs for door weights ranging from 40 to 400 lbs.
  • Heat applied black coating applied after stress relieving process
  • Various ends options — double coil loop, single hook, clipped
  • Custom stenciling
  • Custom packaging upon request