This flat tension spring for this window screen is made of stainless steel. It is used to hold window screens in place on the windows. Springs are compatible with a gate width up to 96 in. and gate weight up to 150 lbs.
 
Secures window screen to windows
Use 2 springs per window screen
Ideal for gate width up to 96 in. and gate weight up to 150 lbs.
Vertical, horizontal or tension control adjustment
Fence post requirements: 4 in. plus
Gate upright works with 2 in. x 3-1/2 in. plus
Backed by limited lifetime warranty