Glencall Letter boxes

Bloomsbury LS05 and Kingsbury LS01 Letter Box

Dimensions

BLOOMSBURY LS05 MAIN PAGE
KINGSBURY LS01 MAIN PAGE
overall dimensions of bloomsbury letter box

Overall dimensions

These are the overall width and height dimensions of the Bloomsbury and Kingsbury Letter box, 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 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 overal width of the 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. The Bloomsbury and Kingsbury 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 gaurantee 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.

dimensions of standard sleeve

Dimensions of a standard size sleeve designed for a 9 inch wall.

  • 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 XXXmm.
  • 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.
side dimensions

Side dimensions of the standard size LS05 and LS01 postbox


A = 285mm, This is the overal 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 elctric 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.
post box opening dimensions

These are the sizes of the postbox letter opening.

  • 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. 

door dimensions

Below are the dimensions of the rear access door of the LS05 Bloomsbury and LS01 Kingsbury rear 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.