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Extra Wide Secured by Design Door Viewers - 14mm Barrel

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Product Information
Fitting Instructions

Door viewers (sypholes) are a great security accessory for your home, as no door should be opened without first checking who is on the other side. Door security is essential to ensuring a home is safe and once quality locks have been fitted it’s key to have a door viewer. Many homeowners overlook the importance of really seeing who is on the other side of the door and essentially this can actually be the best way to prevent unwanted guests, break-ins, and scams. 

These extra wide Secured by Design door viewers are not designed to be fitted with door knockers, as they will overhang over the door knocker. The door viewers are designed for wooden and composite doors with thicknesses between 35-55mm.


Door Viewer Features:

1 Made with a solid brass body 
2 Secured by Design approved
3 Comprises of 3 plastic lenses
4 Ensured to give crystal clear performance for years of safe, secure use
5 Free privacy cover included (except gold andoised and silver anodised finishes)
6 Additional extensions are available if you need to make your viewer even longer
7 Up to a 5 year inland coating guarantee (defined as 25 miles from the coast or 5 miles from a highly populated industrial area)

Technical Information

Viewer head size 26mm
Barrel thickness 14mm
Extension 35-55mm

Fitting Instructions

Fitting Your Door Viewer

To fit the viewer you will need a tape measure, pencil, drill and 12mm bit:

1. Use a tape measure and pencil to make a mark on the door where you want the viewer to go.

2. Drill a pilot hole for the door viewer then change the drill bit to 12mm and drill through the door.

3. Unscrew the two halves of the door viewer, then insert the half with the lens through the outside of the door.

4. Insert the half with the privacy cover into the inside of the door and screw the two halves together by hand.

Please Note – The door viewer length can be altered by screwing and unscrewing the 2 halves to the desired length. DO NOT cut down the door viewer to your required size.

Cleaning Your Door Viewer

Every month, wipe the door viewer over with a moist cloth and remove any dust particles that may have accumulated, and finish off by wiping the door viewer with a lint free cloth.


Door Viewer Guarantee

We guarantee the door viewer and finish against the following;

Surface Coating

We guarantee that the door viewers have a 5 year inland coating guarantee (defined as 25 miles from the coast or 5 miles from a highly populated industrial area) subject to;

1. The door viewers are applied to a door, window frame or door, and no item of door furniture on the door, window frame or door panel are sealed or fixed using any form of silicone sealant or the like.

2. The door viewers are fixed correctly and are not scratched or damaged at any time during the installation process or thereafter.

3. The door viewers are cleaned monthly with a moist cloth and not with any form of cleaning agents.

4. No claim will be accepted for any door viewer that is scratched or mutilated or fitted incorrectly.


We guarantee that the door viewers will not fail mechanically in normal use during the 5 year guarantee period subject to the conditions outlined above.

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