Installing a keysafe in your post box

key safe for the letter box Schlüsselbox für briefkasten | Schlüsselbox für Milchkasten Schlüsselsafe für briefkasten | Schlüsselsafe für Milchkasten Schlüsseltresor für briefkasten | Schlüsseltresor für Milchkasten coffre à clés pour la boîte à lait | boîte aux lettres
People born after 1990 will probably find it hard to believe, but in the not too distant past you didn't go to the local store or supermarket to buy milk, instead milk was delivered direct to almost ever household in Switzerland.

To receive the milk in as practical and organised a way as possible, the Swiss mailbox was adapted so that a part of the box was left unlocked. This allowed the young man in blue cotton overalls to make his early morning deliveries as efficiently as possble. Although some time has now past since the milk delivery boy hung up his milk bottles, the milk box remains an important part of the design of even brand new mail boxes, and not just out of a sense of nostalgia. Apart from receiving your daily milk, the box was also useful for receiving small packages and a hundred other small things that made all of our lives easier.

In modern times the Milk Box is taking on yet another incarnation ... more and more often now, the milk box is being used as a place where a key box can be installed as an alternative to fixing it to a wall. The key safe was designed to provide a safe, controlled environment in which you can safely store your house keys. Whilst the original key box was designed to be fixed to a wall, it soon became apparent that this was not suitable for all installations and over the intervening years many variations have been brought to market including the padlock style key box, the door mounted keysafe and the key safe auto which is designed to be attached to a car window.

The requirement to affix a key safe to a post box or milk box is relatively new but this is becoming more and more popular for three main reasons :

  • Many people who rent houses or appartments are unable to, or do not wish to, make a permanent fixing to a wall.
  • Almost every home in switzerland has a post box or milk box.
  • Home care companies require a key box to be fitted. Fixing to a milk box is often seen as the easiest solution.


So how can you fix a key safe to a milk box and which model key safes are best adapted to these installations ?

How to install your Key box in your letterbox

There are 3 main options for fixing a Key box inside of a milkbox as follows :

Postbox Key safe installation with Glue - image 1b



Postbox Key safe installation with Glue - image 2b



Postbox Key safe installation with Glue - image 3b



Postbox Key safe installation with Glue - image 4b
1. Installing your key box using glue

We recommend two glues from Pattex. These share two key characteristics : they are very strong and that they can withstand both low and high temperatures.

The Pattex Apoxy glue is a two part glue which creates an incredibly hard join when mixed together. The Pattex Extreme glue is a pre mixed glue which again forms a strong join. Both of these glues are touch dry within around 5 minutes.

To install a key box using these glues you should :

  • Clean the rear surface of the milk box that you wish to attach to
  • decide exactly where the safe will be attached remembering to leave a small gap between the bottom of the safe and floor of the milk box. Use a 50mm spacer (or larger) to create this gap.
  • Apply the glue to the rear of the key box following the manufacturers instructions as written on the packaging.
  • Hold the key safe in place until the glue starts to dry and it can support its own weight.
  • While the glue continues to dry, place a suitable object under the key box to help support its weight while it dries.


Postbox Key safe installation with Glue - image 1a



Postbox Key safe installation with Glue - image 2a



Postbox Key safe installation with Glue - image 3a



Postbox Key safe installation with Glue - image 4a
2. Installing your key box using bolts and nuts

This method is only suitable for stand alone mail boxes where the rear of the mail box is accessible both from the interior and exterior.

Whilst the key box will have fixing holes in the rear, the milk box is very unlikely to have corresponding fixing holes. You will therefore need a drill, a drill bit suitable for metal, and a pen for marking the metal.

  • It is easiest to drill the holes from the rear. Place the key box on the rear wall of the post box and mark the fixing points by drawing through the fixing holes.
  • Ensure that the holes will allow the safe to be positions 50mm or more above the floor of the milk box when affixed.
  • Firstly drill one of the lower holes, then place the key box over this hole on the inside of the milk box to ensure that you have the correct position before drilling the 3 remaining holes
  • Once all holes are drilled, the key box can be fixed using 4 suitable bolts and nuts. We advise using blocked nuts, with the nut being installed on the inside.


Postbox Key safe installation with nuts and bolts - image 1
Postbox Key safe installation with nuts and bolts - image 2
Postbox Key safe installation with nuts and bolts - image 3
Postbox Key safe installation with nuts and bolts - image 4
Postbox Key safe magnetic installation 3. Installing your Magnetic key box

The simplest to attach, with metal letter boxes simply attach the key box to the rear of the safe using the strong magnets. If the letter box is not metal, then the metal fixing plate supplied with the key box should be attached using the double sided tape supplied.

When using glue or bolts and nuts, some basic rules should be followed :

  • For key boxes with doors hinged at the bottom of the safe (such as the Masterlock 5401), make sure that there is a minimum 50mm clearance under the safe to allow the door to fully open.
  • With hinged door key boxes, attach to the rear wall to make changing the code as simple as possible.

The Supra S5 | Kidde Permanent with Pattex Kleben Statt Bohren Glue

Postbox Keysafe - Colle image 1 Postbox Keysafe - Colle image 2 Postbox Keysafe - Colle image 3    Postbox Keysafe - Colle image 4
The Supra S5 | Kidde Permanent with Pattex Kleben Statt Bohren Glue

The Supra S5 | Kidde permanent is the original keysafe developed for the american market. Strong, simple to use, with a full cover and push button combination, it remains one of the market leaders even today.

The key box should be attached using the Pattex Kleben Statt Bohren glue supplied (please read our "postbox key safe" page for more information and always follow manufacturers instructions).

Features of Supra S5 | Kidde Permanent postbox Key safe with pattex glue :

  • Pattex Kleben Statt Bohren can be used in temperatures from -30 ° C to + 80 ° C
  • Without solvent
  • Designed for strong fixings. Fully dry in 24 hours.
  • 10 Digit push button code offers many possible combinations.
  • External dimensions: H 104mm x W 64mm x D 49mm
  • Internal dimensions: H 70mm x W 39mm x D 25mm
  • Weight: 0.900 kg

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The MasterLock 5401 with Pattex Kleben Statt Bohren

Postbox Keysafe - image 1   Postbox Keysafe - image 2   Postbox Keysafe - image 3   Postbox Keysafe - image 4
The MasterLock 5401 with Pattex Kleben Statt Bohren Glue

Designed as a wall mounted keysafe, and often used for this purpose, the MLK5401 is also often used in Switzerland for attaching within the letter box. Frequently used by care companies, the keysafe has a four wheel combination which can be changed as required by the owner. The size and weight of this key safe make it suitable for installation in most post boxes.

This should be attached using the Pattex Kleben Statt Bohren glue supplied (please read our "postbox key safe" page for more information and always follow manufacturers instructions).

  • Pattex Kleben Statt Bohren can be used in temperatures from -30 ° C to + 80 ° C
  • Solvent Free
  • Designed for strong fixings. Fully dry in 24 hours.
  • External dimensions: H 120mm x W 83mm x D 38mm
  • Internal dimensions: H 90mm x W 64mm x D 27mm
  • Weight: 0.715 kg

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The Magnetic key box for your Postbox

Postbox Keysafe - magnet image 1    Postbox Keysafe - magnet image 2    Postbox Keysafe - magnet image 3    Postbox Keysafe - magnet image 4
Perfect for attaching to a letter box if a wall mounted solution is not desirable, the Kidde Access Point Magnetic key safe allows 1 or 2 keys to be stored.

  • Locking key case with resettable combination
  • Attaches to almost any surface using a powerful magnet or adhesive tape provided
  • Easy key retrieval and foam insert keep key from falling out.
  • Equipped with anchor point for strap or cable tie.
  • Outside Dimensions: 55 mm wide x 85 mm long x 25 mm deep

Order

No need to make holes in the wall, fit your key box in your post box !

Order your key safe HERE



Key Safe Switzerland
Brendan Collis
Vy d'echallens 6
1040 Villars le Terroir
Vaud
Keysafe Switzerland !
E-mail : coffre-a-cles@ec-suisse.com
Tel : (0041) 07 62 85 23 62
Horaires d’ouverture (sur rendez-vous) :
lundi, mardi, mecredi, jeudi, vendredi : 7h30 – 22h30
samedi, dimanche : 8h30 – 20h30