The stylish new Cambridge mailbox.
Your mail is delivered through the wall via a heavy duty chute attached to our specially made 100% weatherproof letter plate and contained in a sealed storage box with a rear lockable access door.
Designed to be fitted through:
When built into a cavity wall or pier, the mail is securely stored within the cavity area allowing both the front letterplate and back casting to fit flush against the brickwork or rendering.
Sloped chutes are intended for existing whereas stepped chutes are made to be fitted into walls being built.
For externally mounted collection boxes the largest size we recommend is the 2 brick size. For surface mounted boxes larger than this additional support may be required.
The Cambridge mailbox is designed to be installed into single, double and cavity brick walls in addition to brick piers up to 1000mm thick. There are different fittings depending on the depth of the wall or pier. The dimensions of all the fittings are shown below.
Letter plate These are the dimensions of the post flap supplied with the LS23.
|
|
![]() |
Collection Box The collection is located within the cavity area when fitted into a brick wall or pier, for a double or cavity wall the box is located at the rear.
|
![]() |
Collection Box Sleeve Shown below are the dimensions of the inner sleeve of the standard size collection box.
|
![]() |
Rear Access Door Below are the dimensions of the rear access door of the LS23 Cambridge rear retrieval postbox.
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. |
![]() |
Sleeves for deeper walls The standard case size is designed for single, double or cavity walls and 1½ brick* walls or piers. In addition we have standard size cases for 2, 2½ and 3 brick* walls. For other depth walls or piers we will need to manufacture a sleeve to suit. To make the correct size we require two dimensions as shown below.
* Based on a standard metric brick (215mm)
|
![]() |
![]() |
Chute dimensions for use with Lettasafe letter plates |