sure lock

Installation Instructions


How To Use Sure-Lock

The Locking Knob

Care and Cleaning


Sure-Lock can be installed very simply on almost any exterior entry door. Many "do it yourselfers" will have the tools and the necessary skills to install this product with no problems. However, if you do not feel completely confident we strongly recommend using the services of an experienced carpenter or locksmith for proper installation.
mportant: please read instructions completely before beginning installation. Work carefully, safety glasses are recommended.

 Parts Provided
    The Lock, main body, rod assembly, locking knob
    Two - Floor plugs 
    Six x One inch round head screws for Lock
    Three x Three inch security screws for hinges
    One - Package of adhesive ( for floor plugs)

Important: Do not remove locking knob from body

Tools Needed

  • Power drill

  • Robertson  # 8 screwdriver

  • 3/4" drill bit, wood or masonry

  • 1/8" drill bit, steel or wood

  • 6" strip of masking tape

  • Pencil and Safety glasses

Top of page

Hinges: Inspect all hinges carefully. Replace short screws with 3" screws provided. Use one screw per hinge on frame side.

Setting #1
Sliding Position  >


Setting #2
< Fixed Position

Top of page

Step #1 Installing Sure-Lock to the door

Center Sure-Lock with existing door hardware
(2 3/8" or 2 " from the edge of the door.) Holding onto the Locking knob, rest Lock against door and floor.
Lift body approximately 1" up (rod assembly remaining on the floor). Locking knob should be in the center of the cut on body. (See diagram)


Check Sure-Lock is plumb with the door
With a pencil, mark the six screw holes.
With a 1/8" drill bit, drill holes carefully to only 1" deep.
Attach Sure-Lock with the 6 one inch screws provided.  (See diagram)

Caution:  For steel doors: do not over tighten screws.

Step # 2 Location of the Floor Plugs

Place a 6" piece of masking tape on a right angle with door directly below Sure-Lock.
Place bolt in Setting #2 for correct location.
Mark tape with pencil.
Slide bolt into the Setting #1 position and repeat procedure.  

Top of page

Step #3 Drill the Floor Plugs

Depending on your floor finishes, and once hole location is determined, proceed as follows:

Cut a 3/4" hole at proper hole location and remove carpet for both holes. This will prevent the carpet from snagging or unraveling during drilling.

Concrete, Tile or Marble
Caution: Check for radiant heating pipes in flooring. There are cut lines on the floor plugs. With a hacksaw cut plugs to 1 inch.
Drill with Caution.

We recommend using a diamond-coring bit if possible. If not available, drill pilot hole with " masonry drill bit follow with " masonry bit. Use a vacuum to keep hole clean from dust and debree this will help to prevent improper placement of the floor plug.
Drill " holes. Drop floor plugs into holes to check that holes are in the proper position. Check by opening and closing door several times. When you are sure location is correct, remove floor plugs carefully, then apply adhesive and re-install floor plugs.  Check that floor plugs are straight, tight, and flush with floor surface. Insert bolt into floor plugs to insure smooth action. Allow 24 hours for adhesive to set up.

How To Use Sure-Lock

Familiarize yourself with the three positions of Sure-Lock. 

1.     Setting #1:  Sliding Position
2.     Setting #2:  Fixed Position
3.     Unlocked Position.

Setting #1                                                                
We recommend that Sure-Lock should be in Setting # 1,  At all times during the day and night. This will allow you to open the door 1 " to view visitors with complete security at any time.

Setting # 2

This is an optional position recommended mainly for back, side or basement doors where viewing visitors is not crucial.
Sure-Lock is in Setting # 2 it is not necessary to tighten locking knob.

The Locking Knob

This is used to place Sure-Lock in Setting #1 or Setting #2

Important: When Sure-Lock is in Setting #1, we highly recommend turning the Locking knob clockwise approximately three to four times to lock in position. Sure-Lock is secure if Locking Knob cannot be lifted upwards. This will prevent any possible entry due to a hand or a tool being forced through the opened door and prying upwards. If Locking knob can be lifted, tighten knob until it won't lift.

CAUTION: Do Not Over Tighten

1. Do not over tighten knob. All family members including children and grandparents should be able to twist knob easily to unlock.  

2. Be careful not to turn knob anti clockwise too much and unscrew the Locking Knob from rod assembly.

Top of page

Unlocked Position: In the unlocked position the bolt will not be in the ground and therefor Sure-Lock will not be secure. 
The top RED cap will be visible indicating that Sure-Lock is not in the locked position.






When changing Sure-Lock from Position #1 to Position #2, the lock IS NOT SECURE.

Important Reminders

1. Teach your children not to play with Sure-Lock. This lock is not a toy.

2. Make sure all family members know how to use Sure-Lock correctly.

3. Always keep feet away from slide bar to avoid injury.

Care & Cleaning

1. Ensure floor plug holes are free from dirt with regular cleaning.

2. Periodically, check that all screws and floor plugs are secure.

3. Clean only with a clean dry soft cloth as needed. Never use abrasive cleaners on Sure-Lock.

Finishes Available

1. Polished brass
2. Brushed steel

Custom Orders available in:

Black, White, Brushed Brass and Gold Plated.

Top of page