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 strike plate is made of steel. 

Replacement Options: 
Strike plate: 15305
Bolt: 15302 or 15307

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: 4
Colors Available: Brown, White

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.