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LettaSafe Letter Boxes  » Bloomsbury Front Retrieval Letterbox

Bloomsbury Front Retrieval Letterbox

Product code: LS07
Bloomsbury Front Retrieval Letterbox-LS07
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Bloomsbury Front Retrieval Letterbox
Total Price: £356.95
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A front access version of the popular Bloomsbury mailbox.
Your mail is posted through the front flap and retrieved from the front lockable access door.

Designed for:

  • surface mounting or fitting into brick or stone walls
  • fitted onto or through a wooden fence
  • fitting into gates & railings
  • mounting on the surface or fitting into brick piers.

When built into a cavity wall or pier, the mail is securely stored within the cavity area allowing the front casting to fit flush against the brickwork or rendering.

  • standard size has a generous 25 litre capacity
  • case depth can be extended up to 900mm
  • the front door can be customized with a house name or number
  • supplied complete with 2 keys

LS07 Letterbox Dimensions

The dimensions are based on a standard size LS07 mailbox which is suitable for most applications.

Shown below are the dimensions of the LS07 letterbox, all dimensions are in mm.

 Dimensions of the LS07 Letterbox

These are the overall width and height dimensions of the Bloomsbury front opening mailbox, also shown is the distance between the front and rear castings of the postbox.

  • A = 425mm, this is the dimension of the absolute height of the front and rear castings of the Bloomsbury post box. This is bigger than the sleeve which fits between the 2 castings. the dimensions of the inner sleeve are shown below.
  • B = 295mm, this is the size of the overall width of the LS07 mailbox, as with the height dimension above, the width of the front and rear castings is greater than the width of the inner sleeve which is shown below.
  • C = 220mm, this is the distance between the front and rear castings of the postbox when fitted with a standard size sleeve. This is 5mm greater than a typical 9 inch wall which the standard sleeve is made for. The reason for this is to allow for building tolerances. All of the Lettasafe mailboxes are fitted with rubber seals along the connecting edges of the sleeve and the castings. When the letterbox is fitted together a watertight seal is formed. To guarantee that the letterbox is watertight the front and rear castings must clamp tightly with the central sleeve. Invariably brick walls and piers have some degree of tolerance and this is the reason we add an extra 5mm to the central sleeve depth.
 Standard case sizes of the LS07 Postbox

 Shown below are the dimensions of a standard size sleeve.

  • A = 402mm, the distance between the bottom face of the sleeve and the top of the apex, the overall height of the letterbox sleeve is taller as the sides extend below the bottom by 13mm making a total depth of 425mm. These extensions to the sides are generally bedded into the mortar when being built into a brick wall.
  • B = 383mm, the distance between the bottom of the sleeve to the top of the side before the apex begins. The apex of the sleeve rises 20mm from the side to the peak in the centre.
  • C = 397mm, the dimension of the side of the sleeve from the very bottom to the lower point of the top apex.
  • D = 230mm, the depth of the standard size sleeve. We can manufacture sleeves up to 900mm deep. When the letterbox is being fitted into a brick wall, this dimension is always 15mm bigger than the depth of the wall. The reason for this is that both of the front and rear castings have a 5mm groove for the sleeve to slot into and 5mm is to allow for building tolerances, making 15mm in all.
  • E = 275mm, this is the width of the sleeve.
  • F = 13mm, this dimension is the distance between the bottom of the sides and the floor of the mailbox sleeve.
 Overall depth of the LS07 Mailbox

 Side dimensions of the standard size LS07 postbox

  • A = 266mm, This is the overall distance from the very front of the post flap to the hinge casting on the rear retrieval door. This is an important dimension when the letterbox is being fitted into electric sliding gates.
  • B = 220, The distance between the faces of the front and rear postbox castings. This dimension is always 5mm larger than the depth of the wall and is to allow for building tolerances.
Lettasafe LS07 Letter Box Flap opening dimensions

 These are the sizes of the postbox flap entrance.

  • A = 230mm, this is the overall width of the post flap entrance, the casting of the postbox flap has 2 small inserts at the bottom to house rubber stops. These are used to protect the letterbox post flap from damage when allowed to slam shut. The sizes of these inserts are about 10mm square
  • B = 57mm, this is the height of the letter flap opening.

The size of the postbox opening is quite adequate for A4 or larger pacels and packages. A telephone directory size parcel will easily fit through the letterbox opening.

 Dimensions of the LS07 Postbox Retrieval Door

Below are the dimensions of the access door of the LS07 Bloomsbury front retrieval postbox.

  • A = 180mm, this is the width of the rear retrieval doorway
  • B = 185mm, this is the height of the rear door entrance

The diagonal distance of the letterbox opening is 257mm, easily big enough to remove A4 or large packages. A telephone directory sized package can be removed from the letterbox without needing to be bent in any way.


Shipping weight:

8kg for standard size model.

Overal dimensions:

295mm wide, 425mm high, 266mm deep (front to back, this can be extended up to 900mm)


The front and rear castings including the door and flap are cast from pure aluminium in English foundries, whilst the main body is made from sturdy electro zinc coated steel. To ensure it's long lasting appeal, these components are thoroughly cleaned and primed before being phosphate treated and coated in a durable top quality low bake enamel in a choice of colours. All additional components (excluding lock) used are made from solid brass or stainless steel and assembled in England.

LS03 & LS07 Fitting instructions

Using a spirit level draw a horizontal line on the wall and mark the top two holes 180mm apart. Drill the holes 8mm diameter x 50mm deep
Insert the plastic wall plugs then fit the top two screws leaving them protruding around 8mm

Mount the Lettasafe box on the two screws using the keyhole slots provided

Open the door and mark the bottom hole

Lift the letterbox back off the top screws

Drill and fit the bottom wall plug

Refit the box on the top screw

Tighten the top screws and fit the bottom screw


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Front retrieval with holes


Lettasafe, Unit 4 MB Site,, Norwich Road, Norwich, , NR13 4EZ, telephone: 01493 753 288