Letter plate

These are the dimensions of the post flap supplied with the LS14. This post flap is shown in textured black but is also available in brass and polished or brushed chrome.

• A = 305mm, the overall height of the letterplate.
• B = 96mm, this dimension is the overall width of the letterplate.
• C = 57mm, the width of the letterplate orifice.
• D = 233mm, the height of the letterplate orifice

Single wall and brick piers chute assembly

The single wall chute dimensions are shown below, the chute can accommodate wall thicknesses between 100mm and 112mm. The postflap above is not shown fitted, but when assembled it is attached to the front of the sleeve. This sleeve is used for all depths.

• H = 248mm, the overall height of the sleeve, the hole in the brickwork would need to be approximately 82mm.
• W = 78mm, this dimension is the overall width of the chute, the hole in the brickwork should be around 252mm.

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 = 250mm, the height of the opening for a single wall depth chute.
• B = 80mm, 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 = 123mm, the distance from the bottom of the letterbox casting to the bottom of the letter opening

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 LS10 Stamford 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)