Prime-Line Silver Steel Flat Window Spring 3.13 in. H X 5/16 in. W X 3 in. L 1 pk

These tension springs from Prime-Line feature heat-treated steel construction for long lasting strength and consistent flexibility. They are designed for easy installation and help create a firm hold for your screen frames in their sliding window channels. These springs also feature a round top design and require two 3/16 inch holes drilled 3-3/16 inch apart for proper mounting.Used to hold screen frame into frame channels of sliding aluminum windowsHeat treated tension springIt is ideal for use on sliding aluminum windows