Veranda Patio Door High Security Foot Bolt / Lock is a spring loaded and is easy to install.

This foot bolt has four screws, with a plastic rectangular base and a spring diameter bolt action of 11/16". The striker plate is made of metal. 


Measurements:
Body Height: 1-5/8"
Body Width:1-1/2"
Over Height 2-3/8"
Center Holes (top and bottom):1-1/8"
Hole Pattern: 2
Colors Available: Brown

How to install foot bolt:
1. Make sure the door is closed in the locked position.
2. Lengthen the bolt down until it has fastened .
3. Position the lock on the vertical rail of slider, and without touching the bottom sill; place the bolt as close as possible.
4. Mark the holes and then mount then with screws provided.


Position the keeper so that the bolt is on the center of the slot at position on the keeper, then mark holes use two screws to mount the keeper.


Door opening can be limited to approx. 3" simply engaging the bolt onto the second slot at position of the keeper.