Prime-Line Storm or Screen Adjustable Door Spring, Adjusts 13-1/2 in. to 16-1/2 in.

This is a zinc plated steel spring that offers positive tension adjustment for most storm and screen doors. All you have to do is turn the adjusting spring in or out of main spring to change the tension for a light or heavy door. Adjusts from 13-1/2 inch to 16-1/2 inch

• Spring turns from 3/8 in. - 7/16 in. for tension adjustment
• Made to fit most light and heavy screens and storm doors
• Made using steel with zinc plating for durability