Works with 200 Series Narroline, 200 Series Perma-Shield and 400 Series Frenchwood Gliding Patio Doors manufactured from 1978 to Present.

This security lock is commonly referred to as a "foot" lock and is a installed to the side of the operating panel and when depressed a pin is engaged into the door track allowing for additional security.

This "foot" lock can easily be engage and and released with your foot.