B 770 - Sliding screen door M style Tension Spring , 1 inch Stainless Roller, 2 per pkg.

This roller assembly with M shaped tension spring with a 1 inch stainless steel ball bearing roller is used by several patio door manufacturers. The heat treated tension spring is 2-5/16 inches long & shaped like a M that provides tension on the roller housing.
  • 1 inch stainless steel ball bearing roller
  • 1/4 inch wide roller
  • Concave (Grooved) roller
  • Stainless Steel ball bearing roller resists rust & corrosion & will roll smoothly
  • Heat treated M shaped tension spring
  • 2-5/16 inch tension spring that is M shaped.
  • Roller assembly is 5/16 inch wide
  • Used by several patio door manufacturers
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