Product Details:

Keeps Screen Frame Tight in Window Channel

CRL Flat Tension Springs help keep screens held tightly in window channel. To install you can drill two 3/16 inch (4.8 millimeter) holes or simply use a WST930 screen frame punch. A WST900 notching jig and tool can also be used to install the spring into the base of either 5/16 or 3/8 inch (7.9 or 9.5 millimeter) screen frame.

Minimum Order: 1 Package (100 Tension Springs.)