E900 Hardware P728 Plug-End (0.177-in #7 Wire) Black Steel Garage Door Extension Spring Blum with its pre-attached underlayment

with its pre-attached underlayment

modern canvas

Rubberized grip for comfort

check system and router compatibility at sensi

Q: What’s included per carton for the 24x24 size

E900 Hardware P728 Plug-End (0.177-in #7 Wire) Black Steel Garage Door Extension Spring Blum with its pre-attached underlayment2 x P728 springs support 90 pound to 150 pound garage doors 4 x P728 springs support 150 pound to 300 pound garage doors Length over coils: 28 inches Outside diameter: 1 5 16 inches Wire gauge: (0. 177) no. 7 Initial tension: 110 pounds 120 pounds Maximum allowable stretch: 18. 5 inches Manufacturer warranty: 1 year Features Package Quantity 1 Package Contents One one piece garage door plug end extension spring Color Finish Family Black Length