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:

Single brick walls
Double or cavity brick walls
Brick piers.
Fences

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.

Extremely secure design
Standard size has ample capacity for all your mail and newspapers
Customised case sizes available to fit any depth wall or pier up to 1000mm
Choice of coloured letter plates
Supplied complete with 2 keys
Optional draught excluder

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 stepped chute is designed for walls being built and comes in 2 sizes

The single wall model

An LS23 fitted into a pier

Sloped chutes are designed for fitting into existing walls. Available in 2 sizes

There are 2 sizes of fence chute available

Rear view of a Cambridge fitted onto a fence

The rear view of an LS23 fitted into a pier

Silver Arial lettering

Ivory Times Roman lettering

LS23 Letterbox Dimensions

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.

Shown below are the dimensions of all the Cambridge postbox models. Dimensions are in mm

	Letter plate These are the dimensions of the post flap supplied with the LS23. A = 315mm, the overall width of the letterplate. B = 128mm, this dimension is the overall height of the letterplate. C = 57mm, the height of the letterplate orifice. D = 230mm, the width of the letterplate orifice
	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. A = 80mm, the height of the opening. B = 250mm, the width of the opening. D = 242mm, the overall depth of the standard size collection box, used for single, double or cavity brick walls. See below for details of sizes for cases to fit deeper walls or piers. H = 425mm, the overall height of the collection box. W = 295mm, this dimension is the overall width of the collection box. X = 286mm, the distance from the bottom of the letterbox casting to the bottom of the letter opening for a single wall depth chute.
	Collection Box Sleeve Shown below are the dimensions of the inner sleeve of the standard size collection box. 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 or pier. 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. See below for details of sizes for cases to fit deeper walls or piers. 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.
	Rear Access Door Below are the dimensions of the rear access door of the LS23 Cambridge 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.
	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. A, the thickness of the brick (this is 102mm for a standard metric brick). B, the overall depth of the wall or pier from the outside faces. * Based on a standard metric brick (215mm)